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

Frontier, at $258, 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 JetBlue and Southwest. You may be able to fly from San Diego to Washington, D.C. Reagan-National Airport for 30% less than the average price by searching for these airlines.

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

For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $124. Users have also found prices from $127 and $130 on Frontier and Alaska Airlines, respectively.

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 $278, our data indicates the cheapest price to be $129. The most popular route (San Diego - Washington, D.C. Reagan-National), is priced around $257.

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, Paramount Theatre, or Larimer Square. Coors Field, Paramount Theatre, and Larimer Square can be visited by traveling about 18.4 mi, 18.6 mi, and 18.9 mi respectively from Denver Intl. Travelers in need of a car in Denver can rent one for about $54 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 November. Prices are generally better when you fly from San Diego to Washington, D.C. Reagan-National Airport in August, with the cheapest ticket starting at $79.

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.

$124+ Flights from San Diego to Washington, D.C. Reagan-National Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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

Cheap flight deals from San Diego to Reagan-National

Round-trip from	$258 (Kiwi.com)
One-way from	$124 (United Airlines)
Popular in	July
Cheapest in	October
Average price	$418
Good round-trip deal	$317 or less
Good one-way deal	$159 or less

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

Search Deals

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

Search Deals

Highest demand for flights based on searches. 9% potential increase in price ($37 potential increase over avg. RT price).

Search Deals

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

Search Deals

Average for round-trip flights in June 2025

Search Deals

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

Search Deals

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

Search Deals

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 junio 12, 2025.

sáb. 9/2010:50 amSAN - DCA

1 stop7h 05mSouthwest

mié. 9/245:45 pmDCA - SAN

1 stop7h 05mSouthwest

Deal found 6/10

$252

jue. 9/256:25 amSAN - DCA

1 stop7h 36mFrontier

mar. 9/306:00 pmDCA - SAN

1 stop8h 50mFrontier

Deal found 6/10

$254

mié. 10/812:12 pmSAN - DCA

Nonstop5h 17mHawaiian Airlines

mar. 10/148:59 amDCA - SAN

Nonstop5h 28mHawaiian Airlines

Deal found 6/11

$257

lun. 8/411:39 amSAN - DCA

1 stop8h 20mJetBlue

mar. 8/1211:30 amDCA - SAN

1 stop10h 48mJetBlue

Deal found 6/10

$267

mié. 10/86:15 amSAN - DCA

1 stop10h 05mDelta

lun. 10/135:15 pmDCA - SAN

1 stop7h 36mDelta

Deal found 6/10

$287

vie. 8/812:42 pmSAN - DCA

Nonstop5h 17mAlaska Airlines

sáb. 8/168:59 amDCA - SAN

Nonstop5h 21mAlaska Airlines

Deal found 6/10

$288

vie. 7/411:58 amSAN - DCA

1 stop7h 17mUnited Airlines

jue. 7/107:00 amDCA - SAN

1 stop8h 48mUnited Airlines

Deal found 6/12

$332

vie. 7/412:42 pmSAN - DCA

Nonstop5h 17mMultiple Airlines

vie. 7/116:00 pmDCA - SAN

1 stop8h 52mMultiple Airlines

Deal found 6/12

$399

jue. 7/37:33 pmSAN - DCA

1 stop8h 27mAmerican Airlines

dom. 7/65:00 amDCA - SAN

1 stop7h 04mAmerican Airlines

Deal found 6/10

$447

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 junio 12, 2025.

jue. 8/216:25 amSAN - DCA

1 stop7h 34mFrontier

dom. 8/246:00 pmDCA - SAN

1 stop8h 52mFrontier

Deal found 6/9

$258

lun. 8/411:39 amSAN - DCA

1 stop8h 20mJetBlue

mar. 8/1211:30 amDCA - SAN

1 stop10h 48mJetBlue

Deal found 6/10

$267

jue. 8/76:20 amSAN - DCA

1 stop8h 50mSouthwest

mié. 8/135:45 pmDCA - SAN

1 stop7h 05mSouthwest

Deal found 6/12

$272

mié. 9/36:15 amSAN - DCA

1 stop8h 44mHawaiian Airlines

mar. 9/95:06 pmDCA - SAN

1 stop9h 47mHawaiian Airlines

Deal found 6/11

$276

mié. 8/132:48 pmSAN - DCA

1 stop7h 28mAmerican Airlines

dom. 8/175:00 amDCA - SAN

1 stop7h 49mAmerican Airlines

Deal found 6/11

$277

vie. 8/812:42 pmSAN - DCA

Nonstop5h 17mAlaska Airlines

sáb. 8/168:59 amDCA - SAN

Nonstop5h 21mAlaska Airlines

Deal found 6/10

$288

lun. 7/710:30 pmSAN - DCA

1 stop7h 52mUnited Airlines

mar. 7/82:00 pmDCA - SAN

1 stop7h 35mUnited Airlines

Deal found 6/11

$332

lun. 8/410:15 pmSAN - DCA

1 stop7h 21mDelta

vie. 8/86:56 pmDCA - SAN

1 stop7h 33mDelta

Deal found 6/11

$338

jue. 7/1712:42 pmSAN - DCA

Nonstop5h 17mMultiple Airlines

sáb. 8/26:00 pmDCA - SAN

1 stop8h 02mMultiple Airlines

Deal found 6/11

$394

Last-minute flights from San Diego to Reagan-National
Discover last-minute flight deals from San Diego to Reagan-National. Data last updated junio 12, 2025 and is based on user searches.

mar. 6/1711:59 amSAN - DCA

1 stop7h 00mMultiple Airlines

dom. 8/38:59 amDCA - SAN

Nonstop5h 21mMultiple Airlines

Deal found 6/11

$469

mar. 6/1712:42 pmSAN - DCA

Nonstop5h 17mAlaska Airlines

lun. 8/48:59 amDCA - SAN

Nonstop5h 21mAlaska Airlines

Deal found 6/10

$538

mié. 6/186:25 amSAN - DCA

1 stop12h 34mFrontier

mar. 6/241:00 pmDCA - SAN

1 stop13h 05mFrontier

Deal found 6/11

$350

mié. 6/188:40 amSAN - DCA

2 stops10h 35mUnited Airlines

dom. 6/227:00 amDCA - SAN

1 stop9h 02mUnited Airlines

Deal found 6/10

$793

mié. 6/1812:42 pmSAN - DCA

Nonstop5h 17mHawaiian Airlines

jue. 6/198:59 amDCA - SAN

Nonstop5h 21mHawaiian Airlines

Deal found 6/9

$818

sáb. 6/218:40 amSAN - DCA

1 stop6h 10mSouthwest

dom. 6/296:05 pmDCA - SAN

2 stops8h 15mSouthwest

Deal found 6/10

$568

mar. 7/16:25 amSAN - DCA

1 stop6h 49mAmerican Airlines

lun. 7/73:14 pmDCA - SAN

1 stop8h 06mAmerican Airlines

Deal found 6/9

$377

vie. 7/411:58 amSAN - DCA

1 stop7h 17mUnited Airlines

jue. 7/107:00 amDCA - SAN

1 stop8h 48mUnited Airlines

Deal found 6/12

$332

vie. 7/412:42 pmSAN - DCA

Nonstop5h 17mMultiple Airlines

vie. 7/116:00 pmDCA - SAN

1 stop8h 52mMultiple Airlines

Deal found 6/12

$399

lun. 7/712:05 pmSAN - DCA

1 stop6h 30mSouthwest

mié. 7/166:10 amDCA - SAN

2 stops8h 30mSouthwest

Deal found 6/10

$362

mar. 7/89:00 pmSAN - DCA

1 stop10h 59mJetBlue

mar. 7/151:44 pmDCA - SAN

1 stop9h 05mJetBlue

Deal found 6/10

$267

mié. 7/96:25 amSAN - DCA

1 stop7h 34mFrontier

mié. 7/167:00 amDCA - SAN

1 stop7h 10mFrontier

Deal found 6/11

$335

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 junio 12, 2025.

mar. 9/238:05 amSAN - DCA

1 stop9h 48mUnited Airlines

Deal found 6/10

$124

dom. 10/56:25 amSAN - DCA

1 stop7h 36mFrontier

Deal found 6/11

$127

mar. 10/2112:12 pmSAN - DCA

Nonstop5h 17mAlaska Airlines

Deal found 6/11

$130

sáb. 11/11:00 pmSAN - DCA

Nonstop5h 05mHawaiian Airlines

Deal found 6/10

$131

sáb. 8/98:29 pmSAN - DCA

1 stop8h 09mJetBlue

Deal found 6/10

$144

dom. 9/216:20 amSAN - DCA

1 stop7h 55mSouthwest

Deal found 6/12

$147

lun. 7/79:55 pmSAN - DCA

1 stop9h 19mDelta

Deal found 6/10

$179

jue. 7/310:45 pmSAN - DCA

1 stop7h 21mAmerican Airlines

Deal found 6/12

$220

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

sáb. 9/20

10:50 am-8:55 pm

1 stop7h 05m

Washington, D.C. Reagan-National

mié. 9/24

5:45 pm-9:50 pm

1 stop7h 05m

$252

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

jue. 9/25

6:25 am-5:01 pm

1 stop7h 36m

Washington, D.C. Reagan-National

mar. 9/30

6:00 pm-11:50 pm

1 stop8h 50m

$254

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

mié. 10/8

12:12 pm-8:29 pm

Nonstop5h 17m

Washington, D.C. Reagan-National

mar. 10/14

8:59 am-11:27 am

Nonstop5h 28m

$257

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

lun. 8/4

11:39 am-10:59 pm

1 stop8h 20m

Washington, D.C. Reagan-National

mar. 8/12

11:30 am-7:18 pm

1 stop10h 48m

$267

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

mié. 10/8

6:15 am-7:20 pm

1 stop10h 05m

Washington, D.C. Reagan-National

lun. 10/13

5:15 pm-9:51 pm

1 stop7h 36m

$287

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

vie. 8/8

12:42 pm-8:59 pm

Nonstop5h 17m

Washington, D.C. Reagan-National

sáb. 8/16

8:59 am-11:20 am

Nonstop5h 21m

$288

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

vie. 7/4

11:58 am-10:15 pm

1 stop7h 17m

Washington, D.C. Reagan-National

jue. 7/10

7:00 am-12:48 pm

1 stop8h 48m

$332

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

jue. 7/17

12:42 pm-8:59 pm

Nonstop5h 17m

Washington, D.C. Reagan-National

sáb. 8/2

6:00 pm-11:02 pm

1 stop8h 02m

$394

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

jue. 7/3

7:33 pm-7:00 am

1 stop8h 27m

Washington, D.C. Reagan-National

dom. 7/6

5:00 am-9:04 am

1 stop7h 04m

$447

San DiegoWashington, D.C.

SAN - DCA

SANDCA

San Diego

mar. 9/23

8:05 am-8:53 pm

1 stop9h 48m

$124

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 17 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 June 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 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 at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

The most flights from SAN to DCA are scheduled on a Tuesday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Reagan-National by month

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.

Temperature in Reagan-National by month

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).

Reviews of airlines servicing Reagan-National

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from San Diego to Washington, D.C.. Reviews also offer insight into each airline's 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

4,287 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

7,950 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

7.9

Good

2,494 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

8,790 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 $258, 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 JetBlue and Southwest. You may be able to fly from San Diego to Washington, D.C. Reagan-National Airport for 30% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from San Diego to Washington, D.C. Reagan-National Airport one-way?
For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $124. Users have also found prices from $127 and $130 on Frontier and Alaska Airlines, respectively.
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 $278, our data indicates the cheapest price to be $129. The most popular route (San Diego - Washington, D.C. Reagan-National), is priced around $257.
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, Paramount Theatre, or Larimer Square. Coors Field, Paramount Theatre, and Larimer Square can be visited by traveling about 18.4 mi, 18.6 mi, and 18.9 mi respectively from Denver Intl. Travelers in need of a car in Denver can rent one for about $54 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 June 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

Arlington

Alexandria

Woodbridge

Tysons

Silver Spring

Linthicum Heights

Fredericksburg

Gaithersburg

Fairfax

Falls Church

Easton

Herndon

Towson

Bowie

Rockville

Reston

National Harbor

Springfield

Manassas

Dundalk

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$147	Average$246	FlexibilityNo cancel fee	On-time62%
Hawaiian Airlines	Cheapest$219	Average$353	FlexibilityNo cancel fee	On-time85%
Alaska Airlines	Cheapest$237	Average$412	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$257	Average$410	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$276	Average$516	FlexibilityNo cancel fee	On-time63%
Delta	Cheapest$276	Average$387	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$276	Average$407	FlexibilityNo cancel fee	On-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$124+ 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 9/23. 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 October or September, booked 87 days in advance, depart on a Tuesday or Friday and return on a Wednesday

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 junio 12, 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 junio 12, 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 June 9, 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 junio 12, 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 June 8, 2025.

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

Rainfall in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average rainfall totals by month.

Temperature in Reagan-National by month

Plan your trip to Reagan-National by taking into account the average temperature totals by month.

Reviews of airlines servicing Reagan-National

Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from San Diego to Washington, D.C.. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Reagan-National. 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 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 airlines to fly from San Diego to Washington, D.C. Reagan-National Airport one-way?

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?

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

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

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

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

Traveling to a place near San Diego?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Diego to Reagan-National

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

Top 7 airlines flying from San Diego to Reagan-National

100% Free

Book with Flexibility

Travel Smart

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 junio 12, 2025.