What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Francisco one-way?

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $141. Hawaiian Airlines flights start at $148 while deals on Delta start at $149 one-way.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the most reliable airlines from Washington, D.C. Reagan-National Airport to San Francisco?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Reagan-National Airport to San Francisco on time: United Airlines (91%), Air New Zealand (89%), Virgin Australia (83%).

What are the most popular airlines that fly from Washington, D.C. Reagan-National Airport to San Francisco?

The most popular airlines flying from Washington, D.C. Reagan-National Airport to San Francisco are American Airlines, Alaska Airlines and JetBlue. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Washington, D.C. Reagan-National Airport to San Francisco?

Users have found that flying from Washington, D.C. Reagan-National Airport to San Francisco on a Saturday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Washington, D.C. Reagan-National Airport to San Francisco?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, February can be a great choice for travel to San Francisco. Flights to San Francisco from Washington, D.C. Reagan-National Airport in February are about $429 on average during February, but can be found for as low as $170.

What airport do you fly into for flights to San Francisco from Washington, D.C. Reagan-National?

Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Washington, D.C. Reagan-National. On average, San Francisco has 9 inbound flights from Washington, D.C. Reagan-National per day from 8 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

Can I find deals for flights from Reagan-National to San Francisco that include hotel bookings?

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

How can I find direct flights from Reagan-National to San Francisco?

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

Can I find deals for business class flights from Reagan-National to San Francisco?

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

$141+ Flights from Washington, D.C. Reagan-National Airport to San Francisco

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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Francisco are usually found in January or September, booked 78 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Reagan-National to San Francisco

Round-trip from	$275 (Frontier)
One-way from	$141 (Justfly.com)
Popular in	December
Cheapest in	January
Average price	$457
Good round-trip deal	$359 or less
Good one-way deal	$183 or less

From Washington, D.C. Reagan-National to San Francisco

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One-way flight from Washington, D.C. Reagan-National to San Francisco

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Highest demand for flights based on searches. 4% potential increase in price ($21 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Washington, D.C. Reagan-National to San Francisco.

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Price to beat on a one-way flight from Washington, D.C. Reagan-National to San Francisco.

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Find flight deals from Reagan-National to San Francisco

Cheapest flights from Reagan-National to San Francisco
Explore the most affordable flight options available from Reagan-National to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Wed 8/66:00 pmDCA - SFO

1 stop8h 25mFrontier

Mon 8/1110:11 pmSFO - DCA

2 stops10h 53mFrontier

Deal found 6/30

$275

Wed 10/154:39 pmDCA - SFO

1 stop10h 11mJetBlue

Sun 10/196:00 amSFO - DCA

1 stop10h 21mJetBlue

Deal found 6/30

$276

Sat 10/186:59 pmDCA - SFO

Nonstop5h 53mAlaska Airlines

Wed 10/229:40 amSFO - DCA

Nonstop5h 19mAlaska Airlines

Deal found 6/30

$277

Wed 8/136:58 pmDCA - SFO

Nonstop5h 55mHawaiian Airlines

Wed 8/209:04 amSFO - DCA

1 stop9h 55mHawaiian Airlines

Deal found 6/29

$278

Sat 10/257:00 pmDCA - SFO

Nonstop5h 53mUnited Airlines

Tue 10/2812:43 amSFO - DCA

1 stop7h 46mUnited Airlines

Deal found 6/30

$283

Sat 9/206:00 pmDCA - SFO

1 stop7h 30mMultiple Airlines

Fri 9/269:34 amSFO - DCA

Nonstop5h 25mMultiple Airlines

Deal found 6/29

$291

Sat 8/232:45 pmDCA - SFO

2 stops9h 50mSouthwest

Sat 8/305:00 amSFO - DCA

1 stop7h 35mSouthwest

Deal found 6/30

$302

Tue 8/512:10 pmDCA - SFO

1 stop9h 36mDelta

Wed 8/1311:59 pmSFO - DCA

1 stop9h 41mDelta

Deal found 7/1

$307

Best flights from Reagan-National to San Francisco
Discover carefully curated flight deals from Reagan-National to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2025.

Wed 8/66:00 pmDCA - SFO

1 stop8h 25mFrontier

Mon 8/1110:11 pmSFO - DCA

2 stops10h 53mFrontier

Deal found 6/30

$275

Sat 8/236:59 pmDCA - SFO

Nonstop5h 51mHawaiian Airlines

Sat 8/309:34 amSFO - DCA

Nonstop5h 25mHawaiian Airlines

Deal found 6/30

$276

Thu 9/253:15 pmDCA - SFO

1 stop11h 35mJetBlue

Sat 9/2710:00 pmSFO - DCA

1 stop8h 46mJetBlue

Deal found 7/1

$279

Sat 9/206:00 pmDCA - SFO

1 stop7h 30mMultiple Airlines

Fri 9/269:34 amSFO - DCA

Nonstop5h 25mMultiple Airlines

Deal found 6/30

$291

Sat 8/166:25 pmDCA - SFO

1 stop7h 55mDelta

Fri 8/2212:40 amSFO - DCA

1 stop7h 15mDelta

Deal found 6/29

$297

Sat 8/232:45 pmDCA - SFO

2 stops9h 50mSouthwest

Sat 8/305:00 amSFO - DCA

1 stop7h 35mSouthwest

Deal found 6/30

$302

Fri 8/1512:00 pmDCA - SFO

1 stop8h 26mUnited Airlines

Sat 8/308:35 amSFO - DCA

Nonstop5h 19mUnited Airlines

Deal found 6/30

$303

Last-minute flights from Reagan-National to San Francisco
Discover last-minute flight deals from Reagan-National to San Francisco. Data last updated July 1, 2025 and is based on user searches.

Wed 7/96:00 pmDCA - SFO

1 stop8h 25mFrontier

Sat 7/126:37 amSFO - DCA

1 stop7h 22mFrontier

Deal found 6/29

$301

Wed 7/97:00 amDCA - SFO

2 stops17h 21mMultiple Airlines

Sat 7/267:20 amSFO - DCA

1 stop10h 39mMultiple Airlines

Deal found 6/29

$383

Mon 7/146:00 pmDCA - SFO

1 stop9h 19mFrontier

Wed 7/306:37 amSFO - DCA

1 stop7h 22mFrontier

Deal found 6/30

$277

Wed 7/233:45 pmDCA - SFO

1 stop12h 14mJetBlue

Thu 7/316:05 amSFO - DCA

1 stop9h 00mJetBlue

Deal found 6/30

$294

Fri 7/256:00 amDCA - SFO

1 stop7h 12mDelta

Tue 8/1912:35 amSFO - DCA

1 stop7h 30mDelta

Deal found 6/28

$337

One-way flights from Reagan-National to San Francisco
Search for one-way flight options from Reagan-National to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 1, 2025.

Sun 8/316:00 pmDCA - SFO

1 stop9h 19mFrontier

Deal found 6/30

$141

Wed 8/139:59 amDCA - SFO

1 stop9h 09mHawaiian Airlines

Deal found 6/30

$148

Sat 9/274:59 pmDCA - SFO

1 stop9h 30mDelta

Deal found 6/29

$149

Tue 8/126:58 pmDCA - SFO

Nonstop5h 55mAlaska Airlines

Deal found 6/30

$159

Mon 8/114:40 pmDCA - SFO

2 stops9h 00mSouthwest

Deal found 6/30

$164

Tue 8/55:10 pmDCA - SFO

1 stop9h 30mJetBlue

Deal found 6/28

$180

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Wed 8/6

6:00 pm-11:25 pm

1 stop8h 25m

San Francisco

Mon 8/11

10:11 pm-12:04 pm

2 stops10h 53m

$275

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sat 8/23

6:59 pm-9:50 pm

Nonstop5h 51m

San Francisco

Sat 8/30

9:34 am-5:59 pm

Nonstop5h 25m

$276

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Thu 9/25

3:15 pm-11:50 pm

1 stop11h 35m

San Francisco

Sat 9/27

10:00 pm-9:46 am

1 stop8h 46m

$279

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sat 9/20

6:00 pm-10:30 pm

1 stop7h 30m

San Francisco

Fri 9/26

9:34 am-5:59 pm

Nonstop5h 25m

$291

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sat 8/16

6:58 pm-9:53 pm

Nonstop5h 55m

San Francisco

Mon 8/25

9:34 am-5:59 pm

Nonstop5h 25m

$297

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sat 8/23

2:45 pm-9:35 pm

2 stops9h 50m

San Francisco

Sat 8/30

5:00 am-3:35 pm

1 stop7h 35m

$302

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Fri 8/15

12:00 pm-5:26 pm

1 stop8h 26m

San Francisco

Sat 8/30

8:35 am-4:54 pm

Nonstop5h 19m

$303

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Tue 8/5

1:41 pm-6:46 pm

1 stop8h 05m

San Francisco

Mon 8/18

12:40 am-11:05 am

1 stop7h 25m

$307

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Sun 8/31

6:00 pm-12:19 am

1 stop9h 19m

$141

Washington, D.C.San Francisco

DCA - SFO

DCASFO

Washington, D.C. Reagan-National

Wed 8/13

9:59 am-4:08 pm

1 stop9h 09m

$148

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 14 results

The best insider tips for Washington, D.C. Reagan-National Airport to San Francisco flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Reagan-National Airport to San Francisco trip

Airports

DCA

Reserve parking in advance at DCA to ensure a spot, as lots fill up quickly, especially during busy times.

SFO

Use BART for the cheapest travel from SFO to downtown San Francisco; it takes about 40 minutes.

Our travel experts

Emily Zemler

Expert on DCA

Harriet Baskas

Expert on SFO

Best time to book a flight from Reagan-National to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Reagan-National 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 Washington, D.C. Reagan-National Airport to San Francisco

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Francisco?

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. Reagan-National Airport to San Francisco. 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 Washington, D.C. Reagan-National Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Francisco (average of $276). Flying from Washington, D.C. Reagan-National Airport to San Francisco in June is currently the most expensive (average of $360). 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 DCA to SFO?

It’s optimal to fly from Washington, D.C. Reagan-National Airport to San Francisco in the evening. By choosing this option you can save up to 35% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Francisco?

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

Weekly flight availability from Washington, D.C. Reagan-National Airport to San Francisco

The most flights from DCA to SFO are scheduled on a Tuesday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Washington, D.C. Reagan-National Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,273 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,973 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Hawaiian Airlines

7.8

Good

2,539 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,858 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

What airport do you fly into for flights to San Francisco from Washington, D.C. Reagan-National?
Most people fly into San Francisco (SFO) if they book a flight to San Francisco from Washington, D.C. Reagan-National. On average, San Francisco has 9 inbound flights from Washington, D.C. Reagan-National per day from 8 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.
What are the cheapest airlines flying from Washington, D.C. Reagan-National Airport to San Francisco round-trip?
Cheapflights users have booked flights from Washington, D.C. Reagan-National Airport to San Francisco round-trip from $275. Other airlines that can offer you cheap pricing are Hawaiian Airlines, from $276, and JetBlue, from $279. Frontier is 37% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Francisco one-way?
To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $141. Hawaiian Airlines flights start at $148 while deals on Delta start at $149 one-way.
What are the most reliable airlines from Washington, D.C. Reagan-National Airport to San Francisco?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Washington, D.C. Reagan-National Airport to San Francisco on time: United Airlines (91%), Air New Zealand (89%), Virgin Australia (83%).
What are the cheapest flights from Washington, D.C. Reagan-National Airport to San Francisco?
On average you can expect to pay $1,511 for a flight from Washington, D.C. Reagan-National Airport to San Francisco. The cheapest flight overall is $148 while the most popular route, (Washington, D.C. Reagan-National - San Francisco) is currently priced at $228.
Can I find deals for flights from Reagan-National to San Francisco that include hotel bookings?
Yes. In addition to deals on Reagan-National to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Reagan-National to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Reagan-National to San Francisco.
Can I find deals for business class flights from Reagan-National to San Francisco?
Yes. Cheapflights offers flight deals from Reagan-National to San Francisco 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 Washington, D.C. Reagan-National Airport to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to San Francisco (average of $276). Flying from Washington, D.C. Reagan-National Airport to San Francisco in June is currently the most expensive (average of $360). 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

Roseville

Mountain View

South San Francisco

Livermore

Santa Cruz

Turlock

Manteca

Watsonville

Fairfield

Antioch

Hollister

Milpitas

Sunnyvale

Newark

Alameda

Hayward

Daly City

Campbell

Capitola

Foster City

Browse thousands of different options on Cheapflights for your next trip

Top 8 airlines flying from Reagan-National to San Francisco

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$128	Average$266	FlexibilityNo cancel fee	On-time62%
Hawaiian Airlines	Cheapest$158	Average$427	FlexibilityNo cancel fee	On-time85%
JetBlue	Cheapest$162	Average$354	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$256	Average$406	FlexibilityNo cancel fee	On-timeN/A
Alaska Airlines	Cheapest$279	Average$486	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$286	Average$405	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$314	Average$521	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$376	Average$516	FlexibilityNo cancel fee	On-time63%

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$141+ Cheap flights from Reagan-National (DCA) to San Francisco (SFO)

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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Reagan-National to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to San Francisco are usually found in January or September, booked 78 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Reagan-National to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Reagan-National to San Francisco

Cheapest flights from Reagan-National to San FranciscoExplore the most affordable flight options available from Reagan-National to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Explore the most affordable flight options available from Reagan-National to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to San Francisco that are best for you.

The best insider tips for Washington, D.C. Reagan-National Airport to San Francisco flights

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Reagan-National Airport to San Francisco trip

Airports

DCA

SFO

Our travel experts

Best time to book a flight from Reagan-National to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Reagan-National with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Reagan-National Airport to San Francisco

How far ahead should I book a flight from Washington, D.C. Reagan-National Airport to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to San Francisco. Price data was last updated on June 27, 2025.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Francisco?

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

Find hourly flight availability from Reagan-National to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 1, 2025.

What is the cheapest day to fly from Washington, D.C. Reagan-National Airport to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Reagan-National to San Francisco. Price data was last updated on June 29, 2025.

Weekly flight availability from Washington, D.C. Reagan-National Airport to San Francisco

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with Alaska Airlines, Southwest, and Delta from Washington, D.C. Reagan-National Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to San Francisco. 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 into for flights to San Francisco from Washington, D.C. Reagan-National?

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

What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to San Francisco one-way?

What are the most reliable airlines from Washington, D.C. Reagan-National Airport to San Francisco?

What are the cheapest flights from Washington, D.C. Reagan-National Airport to San Francisco?

Can I find deals for flights from Reagan-National to San Francisco that include hotel bookings?

How can I find direct flights from Reagan-National to San Francisco?

Can I find deals for business class flights from Reagan-National to San Francisco?

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to San Francisco?

Traveling to a place near Washington, D.C. Reagan-National Airport?

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Alternative routes for Reagan-National to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Top 8 airlines flying from Reagan-National to San Francisco

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Cheapest flights from Reagan-National to San Francisco
Explore the most affordable flight options available from Reagan-National to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2025.