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Dulles Intl

$152+ Cheap flights from San Francisco (SFO) to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — IAD
Oct 19 — Oct 261
Sun 10/19
Sun 10/26
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Washington, D.C. Dulles Intl are usually found in July or May, booked 43 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Cheap flight deals from San Francisco to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 19, 2025.

Round-trip from

$260
(Kiwi.com)

One-way from

$152
(Alaska Airlines)

Popular in

December

Cheapest in

July

Average price

$492

Good round-trip deal

$378 or less

Good one-way deal

$221 or less
From San Francisco to Washington, D.C. Dulles Intl
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One-way flight from San Francisco to Washington, D.C. Dulles Intl
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Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from San Francisco to Washington, D.C. Dulles Intl.
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Price to beat on a one-way flight from San Francisco to Washington, D.C. Dulles Intl.
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Find flight deals from San Francisco to Dulles Intl

Cheapest flights from San Francisco to Dulles Intl
Explore the most affordable flight options available from San Francisco to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 19, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:57 pmSFO - IAD
1 stop9h 05mFrontier
Mon 10/61:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 9/18$260
This American Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2012:50 amSFO - IAD
2 stops9h 58mAmerican Airlines
Sat 10/256:34 amIAD - SFO
1 stop8h 57mAmerican Airlines
Deal found 9/16$262
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2711:00 pmSFO - IAD
1 stop10h 55mFrontier
Fri 10/31:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 9/16$263
This Orbitz deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/209:17 pmSFO - IAD
1 stop16h 25mMultiple Airlines
Mon 10/2710:04 amIAD - SFO
1 stop8h 56mMultiple Airlines
Deal found 9/17$264
This Kiwi.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/311:57 pmSFO - IAD
1 stop9h 05mFrontier
Tue 10/79:00 amIAD - SFO
2 stops39h 22mFrontier
Deal found 9/18$265
This Booking.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:23 pmSFO - IAD
1 stop14h 03mFrontier
Fri 10/2410:11 amIAD - SFO
1 stop8h 49mFrontier
Deal found 9/17$266
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2511:06 pmSFO - IAD
Nonstop5h 14mUnited Airlines
Tue 12/306:30 amIAD - SFO
Nonstop6h 12mUnited Airlines
Deal found 9/16$268
This Orbitz deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/2410:23 pmSFO - IAD
1 stop13h 54mMultiple Airlines
Tue 10/285:40 pmIAD - SFO
1 stop20h 21mMultiple Airlines
Deal found 9/18$270
This Frontier deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:34 amSFO - IAD
2 stops13h 55mFrontier
Tue 11/48:40 amIAD - SFO
2 stops16h 47mFrontier
Deal found 9/16$271
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/252:12 pmSFO - IAD
2 stops16h 05mFrontier
Fri 10/31:55 pmIAD - SFO
1 stop10h 26mFrontier
Deal found 9/17$273

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 19, 2025.
Use the filters below to find and compare flights from San Francisco to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

San Francisco

Fly to

Dulles Intl

Route

Depart

Return

Price

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Mon 10/20

12:35 am-11:26 am

1 stop7h 51m

Washington, D.C. Dulles Intl

Sat 10/25

12:27 pm-5:54 pm

1 stop8h 27m

$277

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 10/15

10:30 am-12:40 am

1 stop11h 10m

Washington, D.C. Dulles Intl

Tue 10/21

6:15 am-12:20 pm

1 stop9h 05m

$277

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 10/11

1:45 pm-12:40 am

1 stop7h 55m

Washington, D.C. Dulles Intl

Sat 10/18

7:35 am-4:05 pm

1 stop11h 30m

$277

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 10/24

10:57 pm-11:29 am

1 stop9h 32m

Washington, D.C. Dulles Intl

Sun 10/26

6:05 am-10:33 am

1 stop7h 28m

$277

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Sat 11/8

8:15 am-7:26 pm

1 stop8h 11m

Washington, D.C. Dulles Intl

Wed 11/12

6:59 pm-12:12 am

1 stop8h 13m

$277

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 11/5

6:10 am-4:57 pm

1 stop7h 47m

Washington, D.C. Dulles Intl

Sun 11/9

6:00 am-10:49 am

1 stop7h 49m

$287

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Tue 10/21

9:20 pm-5:36 am

Nonstop5h 16m

Washington, D.C. Dulles Intl

Thu 10/23

10:05 pm-12:55 am

Nonstop5h 50m

$297

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Fri 11/7

1:45 pm-12:40 am

1 stop7h 55m

Washington, D.C. Dulles Intl

Mon 11/10

6:03 am-1:29 pm

1 stop10h 26m

$297

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Thu 11/20

7:00 am-5:13 pm

1 stop7h 13m

Washington, D.C. Dulles Intl

Wed 12/3

5:37 pm-11:48 pm

1 stop9h 11m

$336

San FranciscoWashington, D.C.

SFO - IAD

SFOIAD

San Francisco

Wed 10/22

9:20 pm-5:36 am

Nonstop5h 16m

Washington, D.C. Dulles Intl

Wed 10/29

4:10 pm-7:20 pm

Nonstop6h 10m

$337

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results
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The best insider tips for San Francisco to Washington, D.C. Dulles Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Washington, D.C. Dulles Intl Airport trip
Airlines
United Airlines

United's Economy Plus offers extra legroom, enhancing comfort on domestic routes.


United's Polaris Lounges offer exclusive amenities like showers and daybeds for premium passengers.

Read more about United Airlinesby Harriet Baskas
Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort on medium-haul flights.


Alaska's Wi-Fi is a flat fee, ideal for business travelers needing connectivity during flights.

Read more about Alaska Airlinesby Robert Schrader
Airports
SFO

For a quick departure, use SFO's AirTrain Red Line to navigate between terminals efficiently, avoiding long walks post-security.

Read more about SFOby Harriet Baskas
IAD

Use the Silver Line Metro for a cost-effective trip from IAD to downtown Washington, D.C. in under 40 minutes.

Read more about IADby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Best time to book a flight from San Francisco to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Washington, D.C. Dulles Intl Airport

How far ahead should I book a flight from San Francisco to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Dulles Intl. Price data was last updated on September 12, 2025.

Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Washington, D.C. Dulles Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Francisco to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $292). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to IAD?

Find hourly flight availability from San Francisco to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 19, 2025.

When flying from San Francisco to Washington, D.C. Dulles Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 18% versus a flight at noon.

What is the cheapest day to fly from San Francisco to Washington, D.C. Dulles Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Dulles Intl. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their San Francisco to Washington, D.C. Dulles Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from San Francisco to Washington, D.C. Dulles Intl Airport?

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated September 19, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from San Francisco to Washington, D.C. Dulles Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Hawaiian Airlines
7.8
Good
2,732 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,171 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Comfort

7.8

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Francisco to Washington, D.C. Dulles Intl?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Washington, D.C. Dulles Intl. On average, San Francisco has 24 outbound flights to Washington, D.C. Dulles Intl per day from 8 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from San Francisco to Washington, D.C. Dulles Intl Airport?

    Delta can get you from San Francisco to Washington, D.C. Dulles Intl Airport in just under 7h 51m. Your travel time can differ by up to . The distance from San Francisco to Washington, D.C. Dulles Intl Airport is about 2412 mi.

  • What are the cheapest airlines flying from San Francisco to Washington, D.C. Dulles Intl Airport round-trip?

    Frontier, at $128, was found to be the cheapest airline from San Francisco to Washington, D.C. Dulles Intl Airport.Alternate airlines to your destination round-trip include Sun Country Air and American Airlines. You may be able to fly from San Francisco to Washington, D.C. Dulles Intl Airport for 71% less than the average price by searching for these airlines.

  • What are the most reliable airlines from San Francisco to Washington, D.C. Dulles Intl Airport?

    No one likes to see their flight delayed. When booking a flight from San Francisco to Washington, D.C. Dulles Intl Airport consider choosing Asiana Airlines (88%), United Airlines (84%) or Air New Zealand (83%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from San Francisco to Washington, D.C. Dulles Intl Airport?

    The cheapest flight price from San Francisco to Washington, D.C. Dulles Intl Airport is $164. On average you can expect to pay $1,171. The most popular route, (San Francisco - Washington, D.C. Dulles Intl), can usually be booked for $203.

  • Can I find deals for flights from San Francisco to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on San Francisco to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Dulles Intl.

  • Can I find deals for business class flights from San Francisco to Dulles Intl?

    Yes. Cheapflights offers flight deals from San Francisco to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from San Francisco to Washington, D.C. Dulles Intl Airport (average of $292). Flying from San Francisco to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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Alternative routes for San Francisco to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Monterey to Dulles Intl flights
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Top 8 airlines flying from San Francisco to Dulles Intl

Discover the top 8 airlines that operate flights from San Francisco to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$264FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$130Average$583FlexibilityNo cancel feeOn-time83%
American AirlinesCheapest$172Average$381FlexibilityNo cancel feeOn-time71%
DeltaCheapest$237Average$380FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$251Average$401FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$257Average$410FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$295Average$502FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$296Average$445FlexibilityNo cancel feeOn-time63%

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