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

Frontier, at $148, was found to be the cheapest airline from San Diego to Washington, D.C. Reagan-National Airport.Alternate airlines to your destination round-trip include Alaska Airlines and Southwest. You may be able to fly from San Diego to Washington, D.C. Reagan-National Airport for 59% less than the average price by searching for these airlines.

In terms of precipitation, rainfall in Washington, D.C. Reagan-National Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Reagan-National Airport when rainfall is around 2.6 in.

If weather is an important factor for your trip to Washington, D.C. Reagan-National Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Looking for the cheapest flight from San Diego to Washington, D.C. Reagan-National Airport? While on average our users pay $313, our data indicates the cheapest price to be $158. The most popular route (San Diego - Washington, D.C. Reagan-National), is priced around $200.

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

When booking a flight from San Diego to Washington, D.C. Reagan-National Airport, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

Where are the most common layover locations when flying from San Diego to Washington, D.C. Reagan-National Airport?

Most of the time, San Diego to Washington, D.C. Reagan-National Airport flights that have layovers will stop in Denver.

Where are the least popular layover locations for San Diego to Washington, D.C. Reagan-National Airport flights?

San Diego to Washington, D.C. Reagan-National Airport flights have a layover in Chicago least often.

What are some popular things to do or see while on a layover in Denver?

If you're on a layover in Denver and looking for things to do, consider visiting Coors Field, 16th Street Mall, or Paramount Theatre. Coors Field, 16th Street Mall, and Paramount Theatre can be visited by traveling about 18.4 mi, 18.7 mi, and 18.6 mi respectively from Denver Intl. Travelers in need of a car in Denver can rent one for about $57 per day.

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

Users have found that flying from San Diego to Washington, D.C. Reagan-National Airport 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 San Diego to Washington, D.C. Reagan-National Airport?

Flights from San Diego to Washington, D.C. Reagan-National Airport lean towards being more expensive in July. Prices are generally better when you fly from San Diego to Washington, D.C. Reagan-National Airport in September, with the cheapest ticket starting at $190.

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

If you book a flight to Washington, D.C. Reagan-National from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 2 flights from San Diego to Washington, D.C. Reagan-National per day from 7 different airlines.

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

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

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

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

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

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

$85+ Flights from San Diego to Washington, D.C. Reagan-National Airport

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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Diego to Washington, D.C. Reagan-National are usually found in August or September, booked 87 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from San Diego to Reagan-National

Round-trip from	$223 (SmartFares)
One-way from	$85 (CheapOair)
Popular in	December
Cheapest in	August
Average price	$317
Good round-trip deal	$277 or less
Good one-way deal	$239 or less

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

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

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Highest demand for flights based on searches. 7% potential increase in price ($29 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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

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

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Find flight deals from San Diego to Reagan-National

Cheapest flights from San Diego to Reagan-National
Explore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Tue 9/96:00 pmDCA - SAN

1 stop7h 24mFrontier

Deal found 8/17

$223

Wed 8/206:25 amSAN - DCA

1 stop26h 46mFrontier

Fri 9/51:00 pmDCA - SAN

1 stop13h 53mFrontier

Deal found 8/16

$224

Thu 9/116:35 amSAN - DCA

1 stop7h 24mMultiple Airlines

Tue 9/169:59 amDCA - SAN

Nonstop5h 21mMultiple Airlines

Deal found 8/17

$226

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Wed 9/31:00 pmDCA - SAN

1 stop12h 08mFrontier

Deal found 8/17

$228

Fri 9/121:41 pmSAN - DCA

Nonstop5h 18mHawaiian Airlines

Tue 9/169:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 8/17

$229

Sat 9/67:15 amSAN - DCA

1 stop25h 55mMultiple Airlines

Wed 9/109:59 amDCA - SAN

Nonstop5h 21mMultiple Airlines

Deal found 8/15

$230

Sat 9/61:41 pmSAN - DCA

Nonstop5h 18mHawaiian Airlines

Sat 9/139:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 8/16

$232

Sat 9/201:41 pmSAN - DCA

Nonstop5h 18mMultiple Airlines

Mon 9/297:00 amDCA - SAN

1 stop7h 09mMultiple Airlines

Deal found 8/17

$233

Thu 9/111:41 pmSAN - DCA

Nonstop5h 18mHawaiian Airlines

Tue 9/169:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 8/17

$235

Fri 8/229:11 pmSAN - DCA

1 stop12h 00mFrontier

Sun 8/247:00 amDCA - SAN

1 stop7h 02mFrontier

Deal found 8/15

$236

Sat 9/61:41 pmSAN - DCA

Nonstop5h 18mAlaska Airlines

Wed 9/109:59 amDCA - SAN

Nonstop5h 21mAlaska Airlines

Deal found 8/15

$237

Sat 10/47:15 amSAN - DCA

1 stop11h 44mFrontier

Wed 10/87:00 amDCA - SAN

1 stop19h 50mFrontier

Deal found 8/17

$238

Best flights from San Diego to Reagan-National
Discover carefully curated flight deals from San Diego to Reagan-National that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2025.

Sat 9/131:41 pmSAN - DCA

Nonstop5h 18mHawaiian Airlines

Sat 9/209:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 8/15

$223

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Tue 9/96:00 pmDCA - SAN

1 stop7h 24mFrontier

Deal found 8/17

$223

Thu 9/116:35 amSAN - DCA

1 stop7h 24mMultiple Airlines

Tue 9/169:59 amDCA - SAN

Nonstop5h 21mMultiple Airlines

Deal found 8/17

$226

Wed 8/206:25 amSAN - DCA

1 stop26h 46mFrontier

Fri 9/51:00 pmDCA - SAN

1 stop13h 53mFrontier

Deal found 8/16

$224

Fri 9/121:41 pmSAN - DCA

Nonstop5h 18mHawaiian Airlines

Tue 9/169:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 8/17

$229

Sat 9/67:15 amSAN - DCA

1 stop25h 55mMultiple Airlines

Wed 9/109:59 amDCA - SAN

Nonstop5h 21mMultiple Airlines

Deal found 8/15

$230

Tue 8/266:25 amSAN - DCA

1 stop12h 34mFrontier

Wed 9/101:00 pmDCA - SAN

1 stop12h 24mFrontier

Deal found 8/17

$228

Sat 9/61:41 pmSAN - DCA

Nonstop5h 18mHawaiian Airlines

Sat 9/139:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 8/16

$232

Wed 10/11:41 pmSAN - DCA

Nonstop5h 18mMultiple Airlines

Mon 10/66:00 pmDCA - SAN

1 stop8h 53mMultiple Airlines

Deal found 8/17

$233

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Wed 9/101:00 pmDCA - SAN

1 stop12h 24mFrontier

Deal found 8/17

$228

Wed 9/241:41 pmSAN - DCA

Nonstop5h 18mMultiple Airlines

Mon 9/297:00 amDCA - SAN

1 stop7h 09mMultiple Airlines

Deal found 8/16

$233

Thu 9/187:54 pmSAN - DCA

2 stops18h 05mFrontier

Sat 9/206:00 pmDCA - SAN

1 stop20h 09mFrontier

Deal found 8/17

$229

Last-minute flights from San Diego to Reagan-National
Discover last-minute flight deals from San Diego to Reagan-National. Data last updated August 18, 2025 and is based on user searches.

Wed 8/206:25 amSAN - DCA

1 stop26h 46mFrontier

Fri 9/51:00 pmDCA - SAN

1 stop13h 53mFrontier

Deal found 8/16

$224

Fri 8/229:11 pmSAN - DCA

1 stop12h 00mFrontier

Sun 8/247:00 amDCA - SAN

1 stop7h 02mFrontier

Deal found 8/15

$236

Fri 8/226:25 amSAN - DCA

1 stop26h 46mFrontier

Tue 8/267:00 amDCA - SAN

1 stop18h 08mFrontier

Deal found 8/16

$253

Sat 8/2312:12 pmSAN - DCA

1 stop20h 59mFrontier

Wed 9/31:00 pmDCA - SAN

1 stop12h 08mFrontier

Deal found 8/17

$241

Sun 8/248:36 pmSAN - DCA

1 stop12h 35mFrontier

Thu 8/281:00 pmDCA - SAN

1 stop13h 52mFrontier

Deal found 8/15

$318

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Tue 9/96:00 pmDCA - SAN

1 stop7h 24mFrontier

Deal found 8/17

$223

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Wed 9/31:00 pmDCA - SAN

1 stop12h 08mFrontier

Deal found 8/17

$228

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Thu 8/281:00 pmDCA - SAN

1 stop13h 52mFrontier

Deal found 8/15

$305

Mon 8/259:11 pmSAN - DCA

1 stop21h 48mFrontier

Wed 9/101:00 pmDCA - SAN

1 stop12h 24mFrontier

Deal found 8/17

$228

Tue 8/266:25 amSAN - DCA

1 stop12h 34mMultiple Airlines

Tue 9/99:59 amDCA - SAN

Nonstop5h 21mMultiple Airlines

Deal found 8/17

$270

Tue 8/266:25 amSAN - DCA

1 stop12h 34mFrontier

Sat 9/66:00 pmDCA - SAN

1 stop7h 24mFrontier

Deal found 8/17

$297

Tue 8/266:25 amSAN - DCA

1 stop12h 34mFrontier

Thu 9/116:00 pmDCA - SAN

1 stop8h 53mFrontier

Deal found 8/17

$317

One-way flights from San Diego to Reagan-National
Search for one-way flight options from San Diego to Reagan-National. Find affordable one-way fares based on user searches. Data last updated August 18, 2025.

Sat 10/187:00 amSAN - DCA

1 stop7h 04mFrontier

Deal found 8/17

$85

Fri 10/316:41 amSAN - DCA

1 stop7h 20mFrontier

Deal found 8/16

$88

Wed 9/177:15 amSAN - DCA

1 stop25h 55mFrontier

Deal found 8/17

$90

Sat 10/257:00 amSAN - DCA

1 stop7h 04mFrontier

Deal found 8/16

$92

Thu 9/49:03 pmSAN - DCA

1 stop12h 07mFrontier

Deal found 8/17

$95

Sat 11/17:18 pmSAN - DCA

1 stop19h 43mFrontier

Deal found 8/16

$97

Wed 10/86:41 amSAN - DCA

1 stop12h 18mFrontier

Deal found 8/17

$107

Fri 9/1910:20 amSAN - DCA

1 stop8h 39mFrontier

Deal found 8/17

$121

Sat 9/2010:16 amSAN - DCA

2 stops8h 43mFrontier

Deal found 8/17

$122

Fri 9/57:54 pmSAN - DCA

2 stops23h 05mFrontier

Deal found 8/17

$124

Sun 8/248:36 pmSAN - DCA

1 stop12h 35mFrontier

Deal found 8/17

$126

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 9/13

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Sat 9/20

9:59 am-12:20 pm

Nonstop5h 21m

$223

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Mon 8/25

9:11 pm-9:59 pm

1 stop21h 48m

Washington, D.C. Reagan-National

Tue 9/9

6:00 pm-10:24 pm

1 stop7h 24m

$223

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Wed 8/20

6:25 am-12:11 pm

1 stop26h 46m

Washington, D.C. Reagan-National

Fri 9/5

1:00 pm-11:53 pm

1 stop13h 53m

$224

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Thu 9/11

6:35 am-4:59 pm

1 stop7h 24m

Washington, D.C. Reagan-National

Tue 9/16

9:59 am-12:20 pm

Nonstop5h 21m

$226

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Tue 8/26

6:25 am-9:59 pm

1 stop12h 34m

Washington, D.C. Reagan-National

Wed 9/10

1:00 pm-10:24 pm

1 stop12h 24m

$228

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Mon 8/25

9:11 pm-9:59 pm

1 stop21h 48m

Washington, D.C. Reagan-National

Wed 9/10

1:00 pm-10:24 pm

1 stop12h 24m

$228

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Fri 9/12

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Tue 9/16

9:59 am-12:20 pm

Nonstop5h 21m

$229

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Thu 9/18

7:54 pm-4:59 pm

2 stops18h 05m

Washington, D.C. Reagan-National

Sat 9/20

6:00 pm-11:09 am

1 stop20h 09m

$229

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 9/6

7:15 am-12:10 pm

1 stop25h 55m

Washington, D.C. Reagan-National

Wed 9/10

9:59 am-12:20 pm

Nonstop5h 21m

$230

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

Sat 9/6

1:41 pm-9:59 pm

Nonstop5h 18m

Washington, D.C. Reagan-National

Sat 9/13

9:59 am-12:20 pm

Nonstop5h 21m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 20 results

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

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

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

The price you pay for your flight from San Diego to Washington, D.C. Reagan-National Airport may vary depending on when you book. For the best chance of a lower fare, look to book 87 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Reagan-National Airport (average of $278). Flying from San Diego to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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 SAN to DCA?

Unlike in the evening, when flights are generally more expensive, you can save up to 52% on flights from San Diego to Washington, D.C. Reagan-National Airport by exploring options for tickets in the afternoon.

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

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

Reviews of airlines servicing Reagan-National

Read reviews from past customers who have flown Alaska Airlines, Delta, and United Airlines from San Diego to Washington, D.C. Reagan-National Airport. Users can see the overall rating for each airline as well as how each is rated 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.

Delta

8.0

Very good

7,981 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

8,925 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.

American Airlines

7.2

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.

Frontier

5.8

Fair

3,212 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 from for flights from San Diego to Washington, D.C. Reagan-National?
If you book a flight to Washington, D.C. Reagan-National from San Diego, you will be flying from San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 2 flights from San Diego to Washington, D.C. Reagan-National per day from 7 different airlines.
What are the cheapest airlines flying from San Diego to Washington, D.C. Reagan-National Airport round-trip?
Frontier, at $148, was found to be the cheapest airline from San Diego to Washington, D.C. Reagan-National Airport.Alternate airlines to your destination round-trip include Alaska Airlines and Southwest. You may be able to fly from San Diego to Washington, D.C. Reagan-National Airport for 59% less than the average price by searching for these airlines.
What are the cheapest flights from San Diego to Washington, D.C. Reagan-National Airport?
Looking for the cheapest flight from San Diego to Washington, D.C. Reagan-National Airport? While on average our users pay $313, our data indicates the cheapest price to be $158. The most popular route (San Diego - Washington, D.C. Reagan-National), is priced around $200.
Where are the most common layover locations when flying from San Diego to Washington, D.C. Reagan-National Airport?
Most of the time, San Diego to Washington, D.C. Reagan-National Airport flights that have layovers will stop in Denver.
What are some popular things to do or see while on a layover in Denver?
If you're on a layover in Denver and looking for things to do, consider visiting Coors Field, 16th Street Mall, or Paramount Theatre. Coors Field, 16th Street Mall, and Paramount Theatre can be visited by traveling about 18.4 mi, 18.7 mi, and 18.6 mi respectively from Denver Intl. Travelers in need of a car in Denver can rent one for about $57 per day.
Where are the least popular layover locations for San Diego to Washington, D.C. Reagan-National Airport flights?
San Diego to Washington, D.C. Reagan-National Airport flights have a layover in Chicago least often.
Can I find deals for flights from San Diego to Reagan-National that include hotel bookings?
Yes. In addition to deals on San Diego to Reagan-National flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Diego to Reagan-National?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Reagan-National.
Can I find deals for business class flights from San Diego to Reagan-National?
Yes. Cheapflights offers flight deals from San Diego to Reagan-National 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 Diego to Washington, D.C. Reagan-National Airport?
Currently, February is the cheapest month in which you can book a flight from San Diego to Washington, D.C. Reagan-National Airport (average of $278). Flying from San Diego to Washington, D.C. Reagan-National Airport in March is currently the most expensive (average of $335). 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

Woodbridge

Arlington

Alexandria

Tysons

Silver Spring

Springfield

Fredericksburg

Gaithersburg

Towson

Linthicum Heights

Fairfax

Manassas

Falls Church

Laurel

Rockville

Oxon Hill

National Harbor

Dundalk

Waldorf

Bowie

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from San Diego to Reagan-National

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$148	Average$263	FlexibilityNo cancel fee	On-time62%
Alaska Airlines	Cheapest$241	Average$387	FlexibilityNo cancel fee	On-time75%
Southwest	Cheapest$256	Average$491	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$256	Average$376	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$257	Average$410	FlexibilityNo cancel fee	On-time69%
Hawaiian Airlines	Cheapest$257	Average$353	FlexibilityNo cancel fee	On-time85%
Delta	Cheapest$276	Average$380	FlexibilityNo cancel fee	On-timeN/A

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$85+ Cheap flights from San Diego (SAN) to Reagan-National (DCA)

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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Diego to Reagan-National 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 San Diego to Washington, D.C. Reagan-National are usually found in August or September, booked 87 days in advance, depart on a Tuesday or Thursday and return on a Friday

Cheap flight deals from San Diego to Reagan-National

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Diego to Reagan-National

Cheapest flights from San Diego to Reagan-NationalExplore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Explore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Cheapflights Fare Finder

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

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

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Reagan-National. Price data was last updated on August 8, 2025.

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

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

Find hourly flight availability from San Diego to Reagan-National. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 18, 2025.

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

Use this chart to determine the cheapest time to fly round-trip from San Diego to Reagan-National. Price data was last updated on August 17, 2025.

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

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

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

Where are the most common layover locations when flying from San Diego to Washington, D.C. Reagan-National Airport?

What are some popular things to do or see while on a layover in Denver?

Where are the least popular layover locations for San Diego to Washington, D.C. Reagan-National Airport flights?

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Top 7 airlines flying from San Diego to Reagan-National

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Cheapest flights from San Diego to Reagan-National
Explore the most affordable flight options available from San Diego to Reagan-National. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.