2,000+ travel companies
2,000+ travel companies
Scan to get our free app
Use our app to get live travel updates and book mobile tickets for trains, buses, flights, and ferries.
App Store
4.942K ratings
Google Play
4.6136K reviews
The cheapest and fastest flights from San Francisco, CA to Boulder, CO
Showing times, prices and bookable tickets for Nov 17
- Cheapest price on Nov 17
- $137
- Average ticket price on Nov 17
- $137
- Fastest journey on Nov 17
- 10 h 42 m
- Average journey duration on Nov 17
- 10 h 42 m
- Flights on Nov 17
- 1
- Distance
- 1502 km
Cheap tickets
The best way to find a cheap flight ticket from San Francisco, CA to Boulder, CO is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from San Francisco, CA to Boulder, CO will cost around $137 if you buy it on the day, but the cheapest tickets can be found for only $137.
Fast flights
On Tue, Nov 17, we found 1 flights from San Francisco, CA to Boulder, CO, including 1 direct services.
On Tue, Nov 17 the direct flights cover the 1502 km distance in an average of 10 h 42 m but if you time it right, some flights will get you there in just 10 h 42 m .
On Tue, Nov 17 the longest flights will take 10 h 42 m and usually involve a change or two along the way, but you might be able to save a few pennies if you’re on a budget.
5:01 AM 10h42 San Francisco, CA 3:43 PM Boulder, CO $137 1 One-way 0 transfers
5:01 AM 10h42 San Francisco, CA 3:43 PM Boulder, CO $137 1 One-way 0 transfers
Journey information
Overview: San Francisco, CA to Boulder, CO flight
USAUSA
Flights from San Francisco, CA to Boulder, CO depart on average 121 times per day, taking around 4h 14m. Cheap flight tickets for this journey start at $168 if you book in advance.
There are 15 flights per day. The earliest flight runs at 00:26, the last at 23:57. The fastest flight covers the 933 miles (1502 km) distance in 2h 32m. January is the cheapest month to fly.
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Distance 933 miles (1502 km) |
Average flight duration 4h 14m |
Cheapest ticket price $168 |
Flights per day 121 |
Direct flights 15 |
Fastest flight 2h 32m |
First flight 12:26 AM |
Last flight 11:57 PM |
Cheapest Month Jan |
Cheapest Day Wed |
High Season Oct - Dec |
Low Season Apr - Jun |
Fares are the lowest economy prices found on Omio. Early booking often means lower prices. Prices change daily and are subject to availability. Discount cards, coach trips, and booking fees are not included.
Price information
Frequently asked questions about your San Francisco, CA to Boulder, CO trip
Use these quick route answers to check fares, travel time, departure options, and direct services before booking from San Francisco, CA to Boulder, CO.
Cheap plane tickets from San Francisco, CA to Boulder, CO can start from as little as $168 when you book in advance. The average flight ticket price for San Francisco, CA to Boulder, CO is $615 ; however, prices vary depending on the time of day and class and they tend to be more expensive on the day.
The earliest flight from San Francisco, CA to Boulder, CO leaves at 12:26 AM. Plan your trip with the Journey Planner from Omio.
The latest flight from San Francisco, CA to Boulder, CO leaves at 11:57 PM.
Yes, there are 15 direct flights a day from San Francisco, CA to Boulder, CO with United, frontier airlines. Schedules can vary on holidays or weekends with fewer direct flights.
Why should you book San Francisco, CA to Boulder, CO flights with Omio?
United as well as frontier airlines, American Airlines, Alaska Airlines, skywest airlines and more offer flights services from San Francisco, CA to Boulder, CO.
Omio is an official ticket reseller for all your travel options from San Francisco, CA to Boulder, CO.
Why book with Omio vs United?
- Compare with other providers: On Omio, you can not only buy tickets for United, but also compare tickets for the likes of frontier airlines, American Airlines, Alaska Airlines or skywest airlines to find the best option for your trip from San Francisco, CA to Boulder, CO.
- Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
Why book with Omio over Kayak, Skyscanner or Trip?
- Compare with other providers: On Omio, you can also compare tickets for the likes of frontier airlines, American Airlines, Alaska Airlines or skywest airlines to find the best option for your trip from San Francisco, CA to Boulder, CO.
Airlines: United, frontier airlines, American Airlines, Alaska Airlines, skywest airlines, Sun Country Airlines from San Francisco, CA to Boulder, COFind the best flights between San Francisco, CA to Boulder, CO with Omio's travel partners United, frontier airlines, American Airlines, Alaska Airlines, skywest airlines, Sun Country Airlines from $168. We can find you the best deals, schedules and tickets when comparing and booking the best trip.
United
About
United Airlines, established in 1926, is a major U.S. airline headquartered in Chicago, Illinois. Operating an extensive domestic and international network, United serves more destinations than any other airline, connecting travelers across six continents. The airline's eight hubs include Chicago–O'Hare, Denver, Houston–Intercontinental, Los Angeles, Newark, San Francisco, Washington–Dulles, and Guam. As a founding member of the Star Alliance, United offers a comprehensive range of services, including regional flights through United Express, catering to both leisure and business travelers. The airline is committed to sustainability, investing in sustainable aviation fuel and innovative technologies to reduce its environmental impact.
Luggage & cancellation policy
Average United Duration
2h 32m
Cheapest United Price
$445
United frequency
53 a day
Luggage included
Carry-on baggage allowance is 7kg total (2 pieces max. ) for both Choice and Flex fares on United Airlines and Virgin Australia flights.
Additional luggage
Excess baggage fees apply for additional checked luggage beyond the standard allowance.
Luggage storage
Both airlines provide checked baggage services for storing luggage during flights.
Cancellation Policy
Cancellation fees apply per person, per booking, with specific fees for different fare types.
Refund
Not applicable to flights; however, full refunds are available if flights are canceled by the airline.
Pregnant on board
Pregnant passengers are permitted to travel, with specific guidelines and medical certificates required after a certain gestational period.
Unaccompagned minor
Unaccompanied minors are permitted to travel, with specific age restrictions and services provided.
Amenities on board the airplane
Wifi
Food sold onboard
Meals and snacks are included on international flights operated by United Airlines and Virgin Australia.
Seat reservation
Seat selection may incur additional fees, depending on the fare type and airline.
Toilets
USB plugs
Accessibility
United Airlines and Virgin Australia offer services to and within Australia, providing accessible travel options for passengers with mobility needs.
Bikes
Both airlines permit bicycles onboard, with specific guidelines and fees.
Pets
United Airlines and Virgin Australia allow pets onboard, subject to specific policies and fees.
American Airlines
About
American Airlines is one of the largest airlines in the world, connecting travelers to hundreds of destinations across the United States, Latin America, Europe, Asia, and beyond. Operating from major hubs such as Dallas/Fort Worth, Miami, and Charlotte, American offers a wide range of travel options. Passengers can choose from Economy with affordable fares, Premium Economy with extra space, or Business and First Class featuring flat-bed seats, premium dining, and lounge access. With a modern fleet and membership in the oneworld alliance, American Airlines combines global reach with comfort and reliability.
Luggage & cancellation policy
Average American Airlines Duration
3h 49m
Cheapest American Airlines Price
$455
American Airlines frequency
21 a day
Luggage included
1 carry-on bag (22 x 14 x 9 inches) and 1 personal item (18 x 14 x 8 inches) included in most fares
Additional luggage
Checked bags fees vary by route. First checked bag typically $30, second $40 on domestic flights
Cancellation Policy
Basic Economy tickets cannot be changed or refunded. Other fares allow changes with fee, refunds subject to fare rules.
Pregnant on board
Passengers can fly up to 36 weeks for single pregnancies, 32 weeks for multiple pregnancies. Medical certificate required within 7 days of departure if within 4 weeks of due date.
Unaccompagned minor
Children ages 5-14 can travel alone using American Airlines Unaccompanied Minor Service. Service fee is $150 each way.
Amenities on board the airplane
Wifi
Food sold onboard
USB plugs
Accessibility
American Airlines provides wheelchair assistance and special services for passengers with disabilities. Assistance must be requested at least 48 hours before departure.
Pets
Small dogs and cats allowed in cabin for $125 fee. Must be in approved carrier under seat. Service animals allowed.
skywest airlines
About
SkyWest Airlines is a major North American regional airline headquartered in St. George, Utah. It operates flights for larger carriers such as Alaska Airlines (as Alaska SkyWest), American Airlines (as American Eagle), Delta Air Lines (as Delta Connection), and United Airlines (as United Express). SkyWest is the largest regional airline in North America by fleet size, passengers carried, and destinations served. The airline connects passengers to over 250 destinations across the United States, Canada, and Mexico, primarily linking smaller airports to major airline hubs. SkyWest's fleet consists of regional jets, including the Bombardier CRJ series and Embraer 175 aircraft.
Luggage & cancellation policy
Average skywest airlines Duration
3h 52m
Cheapest skywest airlines Price
$455
skywest airlines frequency
10 a day
Luggage included
One carry-on bag and one personal item are allowed for free.
Additional luggage
Additional luggage can be purchased, and fees apply for excess, oversized, or overweight baggage.
Cancellation Policy
If canceled within 24 hours of purchase, a full refund is possible, provided the departure is at least 7 days away; after 24 hours, fees range from $100 to $500.
Refund
If SkyWest Airlines cancels a flight, passengers are eligible for a full refund.
Pregnant on board
Being pregnant on board is allowed, but specific policies may depend on the partner airline.
Unaccompagned minor
Children aged 5-14 can travel alone using the unaccompanied minor service, which includes airport escort and supervision.
Amenities on board the airplane
Seat reservation
Toilets
Accessibility
SkyWest Airlines complies with all provisions of the Air Carrier Access Act and accommodates customers with special needs.
Bikes
Bicycles can be checked in but may incur additional fees and must be properly packed.
Pets
Small pets like cats and dogs are allowed in the cabin for a fee, with restrictions on pet and carrier size.
Alaska Airlines
About
Alaska Airlines, headquartered in SeaTac, Washington, is a major U.S. airline and the fifth-largest in North America by scheduled passengers carried as of 2024. Along with its regional partners, Horizon Air and SkyWest Airlines, Alaska Airlines operates a route network primarily connecting cities along the West Coast of the United States, including Alaska and Hawaii, to over 100 destinations in the contiguous U.S., the Bahamas, Belize, Canada, Costa Rica, Guatemala, and Mexico. The airline is a member of the Oneworld alliance, offering passengers access to a broad global network. Alaska Airlines is known for its customer service and loyalty program, Mileage Plan, and offers First Class, Premium Class, and Main Cabin seating options. The airline's primary hub is Seattle-Tacoma International Airport. In 2024, its parent company, Alaska Air Group, acquired Hawaiian Airlines.
Luggage & cancellation policy
Average Alaska Airlines Duration
4h 9m
Cheapest Alaska Airlines Price
$436
Alaska Airlines frequency
44 a day
Luggage included
1 carry-on bag (22 x 14 x 9) and 1 personal item included
Additional luggage
Checked bags fees start at $30 for first bag, $40 for second bag
Cancellation Policy
Saver fares are non-refundable. Main and First Class fares are refundable with fee, depending on fare type and elite status
Pregnant on board
Passengers can fly up to 36 weeks pregnant. After 28 weeks, medical certificate required
Unaccompagned minor
Unaccompanied minor service available for children ages 5-17. Service fee is $50 per direction on nonstop flights
Amenities on board the airplane
Wifi
USB plugs
Accessibility
Alaska Airlines provides wheelchair assistance and special services for passengers with disabilities, including meet-and-assist services and accessible seating
Pets
Pets allowed in cabin and cargo hold. Service animals welcome. Fees apply for pets in cabin ($100)
Sun Country Airlines
Luggage & cancellation policy
Average Sun Country Airlines Duration
5h 49m
Cheapest Sun Country Airlines Price
$446
Sun Country Airlines frequency
3 a day
Luggage included
One personal item (17 x 13 x 9 inches) included
Additional luggage
Checked bags available for purchase, fees vary by route
Cancellation Policy
Refunds available within 24 hours of booking, after that fees apply based on fare type
Pregnant on board
Pregnant passengers can travel up to 36 weeks (32 weeks for multiple pregnancies). Medical certificate required after 28 weeks
Unaccompagned minor
Unaccompanied minor service available for children 5-14 years old, fee applies, must be booked in advance
Amenities on board the airplane
Wifi
USB plugs
Accessibility
Wheelchair assistance available with 48-hour advance notice
frontier airlines
About
Frontier Airlines is a major American ultra-low-cost carrier headquartered in Denver, Colorado, operating flights to over 120 destinations across the United States, Caribbean, Mexico, and Central America. Known for its "Low Fares Done Right" philosophy, Frontier focuses on offering affordable travel by allowing passengers to choose and pay only for the services they need, such as seat selection or baggage. The airline is also recognized for its commitment to fuel efficiency, claiming to be "America's greenest airline" due to its modern, lightweight aircraft and operational practices. A distinctive feature of Frontier is the animal featured on the tail of each aircraft, highlighting North American wildlife.
Luggage & cancellation policy
Average frontier airlines Duration
2h 35m
Cheapest frontier airlines Price
$168
frontier airlines frequency
25 a day
Luggage included
Personal item (18 x 14 x 8 inches) included
Additional luggage
Checked bag fees start at $79 per bag
Cancellation Policy
Non-refundable tickets, changes permitted for fee starting at $79 plus fare difference
Pregnant on board
Pregnant women can travel up to 7 days before due date, medical certificate required after 36 weeks
Unaccompagned minor
Children ages 5-14 can travel alone for $100 fee each way, must be nonstop flight only
Amenities on board the airplane
Wifi
Accessibility
Frontier Airlines offers assistance for passengers with disabilities, including wheelchair service and boarding assistance. Passengers are encouraged to request these services in advance to ensure availability and proper arrangements.
Companies, tickets, and onboard amenities between San Francisco, CA and Boulder, CO
Review the details behind your booking, from operators and ticket rules to luggage, onboard amenities, accessibility, and route-specific travel policies.
When taking a flight from San Francisco, CA to Boulder, CO, you can count on United, frontier airlines, American Airlines, Alaska Airlines, skywest airlines, Sun Country Airlines for the best way to get you to Boulder, CO. You can also check all possible airlines who offer a service between San Francisco, CA and Boulder, CO and compare the amenities they offer before buying a plane ticket.
For international flights we recommend to arrive 2.5 to 3 hours before departure. Please check the website of your departure airport if in doubt. Some airports may offer booking time slots for security checks or offer additional information on when to get there based on time of day.
Most airlines permit carry-on bags that fit within specific dimensions (e.g., 22 x 14 x 9 inches or 56 x 36 x 23 cm), including handles and wheels. Bags must fit in the overhead bin or under the seat in front of you.
Many airlines impose weight limits, commonly ranging between 7 kg (15 lbs) and 12 kg (26 lbs). Typically, passengers are allowed one carry-on bag and one personal item (for example a purse, laptop bag, or backpack). Personal items must fit under the seat in front of you. Budget Airlines (like Ryanair or Wizz Air) have stricter size and weight limits, often requiring fees for larger carry-ons. Full-Service Airlines have more lenient policies, sometimes including more spacious dimensions or higher weight limits depending on your ticket class.
The list of items prohibited on an airplane varies by country and airline, but in general, the following items are not allowed in carry-on or checked baggage: Weapons and self-defence items, sharp objects, flammable materials, explosives, toxic substances, or liquids over 100ml (except for medications and baby essentials). In checked baggage, firearms (without authorization), explosives, large lithium batteries, and hazardous chemicals are prohibited. Electronic cigarettes must be in carry-on bags, while alcohol and dry ice have restrictions. Always check with your airline for specific regulations.
FAQs: San Francisco, CA to Boulder, CO Flight
Find answers to the most common questions about traveling from San Francisco, CA to Boulder, CO by flight. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest flight, the cheapest option, or tips for making the most of your visit at Boulder, CO, this guide helps you travel smarter and with confidence.
Yes, you can take a bus between San Francisco, CA and Boulder, CO.
popular airports
Popular airports from San Francisco, CA to Boulder, CO
Most San Francisco, CA to Boulder, CO flights use the San Francisco International Airport to airport pair. Use this guide to compare San Francisco, CA and Boulder, CO airports on this route, check city-centre transport, alongside checking practicalities like airport facilities and services.
Departure airports in San Francisco
Arrival airports in Boulder
Which San Francisco, CA airport do flights to Boulder, CO leave from?
Flights from San Francisco, CA to Boulder, CO depart from San Francisco International Airport. The airport is 1 miles (2 km) from San Francisco, CA city centre at San Francisco, CA 94128, USA.
San Francisco International Airport (SFO)San Francisco, CA 94128, USA
City-centre transport
Getting to San Francisco International Airport from San Francisco city centre
San Francisco International Airport is 1 km from San Francisco city centre. Public transport options include:
Bus292, 397 · 57m · $4 · every ~6 min
SubwayYellow-S, Red-S · 27m · $11 · every ~21 min
Yellow-S, Red-S · 29m · $11 · every ~15 min
San Francisco International Airport airport facilities and services
San Francisco International Airport has practical services for this route, including Wifi, Shopping, Parking, ATM, Taxis, Accessibility, WC, Shower, Lounge, and Lost and Found Office.
Wi-Fi and ATMs
Free Wi-Fi available throughout the airport. ATMs are located throughout all terminals.
Luggage and lost property
Lost and found is available at the station.
Parking, taxis and toilets
Available at San Francisco International Airport: Parking, Taxis, WC.
Accessibility
Accessibility facilities are available at San Francisco International Airport: Elevators, ramps, toilets.
Most popular flights from San Francisco, CA
More options for your journey from San Francisco, CA to Boulder, CO
Here are some other resources that might have the information you need
Most popular flights to and from Boulder, CO and San Francisco, CA
The Omio App Makes Travel Planning Easy
We’ll get you where you want to go. From live train updates to mobile tickets, our innovative app is the ideal way to plan and keep track of your travel.
