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Cheap flights from Washington, D.C. Dulles Intl Airport to San Diego from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to San Diego departing on 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to San Diego (IAD-SAN)

Cheap round-trip flights

Frontier Logo
6:10 am - 6:44 pmIAD-SAN
15h 34m2 stops
Frontier Logo
10:20 am - 12:02 pmSAN-IAD
22h 42m2 stops
$235Frontier
Find Deal
Sun, Sep 14 - Fri, Sep 26
Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
Logo
5:37 pm - 9:17 amSAN-IAD
12h 40m1 stop
$236
Find Deal
Tue, Sep 16 - Sun, Sep 21
Alaska Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
Alaska Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
$237Alaska Airlines
Find Deal
Wed, Sep 10 - Tue, Sep 16
Hawaiian Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
Hawaiian Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
$240Hawaiian Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
Frontier Logo
1:55 pm - 11:53 pmIAD-SAN
12h 58m2 stops
Frontier Logo
4:53 pm - 12:55 pmSAN-IAD
17h 02m2 stops
$243Frontier
Find Deal
Thu, Sep 11 - Sun, Sep 14
Frontier Logo
10:17 am - 6:16 pmIAD-SAN
10h 59m1 stop
Frontier Logo
5:37 pm - 9:17 amSAN-IAD
12h 40m1 stop
$245Frontier
Find Deal
Fri, Sep 19 - Sun, Sep 21
United Airlines Logo
9:00 am - 11:22 amIAD-SAN
5h 22mnonstop
United Airlines Logo
7:00 am - 4:43 pmSAN-IAD
6h 43m1 stop
$247United Airlines
Find Deal
Wed, Sep 17 - Tue, Sep 23
United Airlines Logo
12:35 pm - 5:17 pmIAD-SAN
7h 42m1 stop
United Airlines Logo
12:00 pm - 10:06 pmSAN-IAD
7h 06m1 stop
$252United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
American Airlines Logo
11:47 am - 6:03 pmIAD-SAN
9h 16m1 stop
American Airlines Logo
12:38 pm - 10:48 pmSAN-IAD
7h 10m1 stop
$256American Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
Alaska Airlines Logo
5:52 pm - 8:19 pmIAD-SAN
5h 27mnonstop
Alaska Airlines Logo
8:33 am - 4:52 pmSAN-IAD
5h 19mnonstop
$257Alaska Airlines
Find Deal
Wed, Sep 10 - Mon, Sep 15

Hawaiian Airlines flights from Washington, D.C. Dulles Intl Airport to San Diego

Our best Hawaiian Airlines deals on Washington, D.C. Dulles Intl Airport to San Diego flight tickets
Hawaiian Airlines
Sep 13
IAD5:52 pmWashington, D.C. Dulles Intl
5h 27m
SAN8:19 pmSan Diego
Sep 20
SAN8:33 amSan Diego
5h 19m
IAD4:52 pmWashington, D.C. Dulles Intl
$240
Find similar
Hawaiian Airlines
Aug 31
IAD5:52 pmWashington, D.C. Dulles Intl
5h 27m
SAN8:19 pmSan Diego
Sep 13
SAN8:33 amSan Diego
5h 19m
IAD4:52 pmWashington, D.C. Dulles Intl
$457
Find similar

Delta flights from Washington, D.C. Dulles Intl Airport to San Diego

Our best Delta deals on Washington, D.C. Dulles Intl Airport to San Diego flight tickets
Delta
Oct 22
IAD6:18 amWashington, D.C. Dulles Intl
9h 37m
1 stop
SAN12:55 pmSan Diego
Oct 25
SAN10:20 pmSan Diego
7h 40m
1 stop
IAD9:00 amWashington, D.C. Dulles Intl
$277
Find similar
Delta
Oct 23
IAD7:35 amWashington, D.C. Dulles Intl
9h 36m
1 stop
SAN2:11 pmSan Diego
Nov 1
SAN7:10 amSan Diego
9h 08m
1 stop
IAD7:18 pmWashington, D.C. Dulles Intl
$287
Find similar
Delta
Sep 12
IAD6:15 amWashington, D.C. Dulles Intl
9h 31m
1 stop
SAN12:46 pmSan Diego
Sep 22
SAN9:50 pmSan Diego
8h 19m
1 stop
IAD9:09 amWashington, D.C. Dulles Intl
$297
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport to San Diego 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, momondo users made 832,500 searches. Data last updated August 21, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sun 9/14

6:10 am-6:44 pm

2 stops15h 34m

San Diego

Fri 9/26

10:20 am-12:02 pm

2 stops22h 42m

$235

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Tue 9/16

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Sun 9/21

5:37 pm-9:17 am

1 stop12h 40m

$236

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 9/10

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Tue 9/16

8:33 am-4:52 pm

Nonstop5h 19m

$237

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 9/13

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Sat 9/20

8:33 am-4:52 pm

Nonstop5h 19m

$240

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Thu 9/11

1:55 pm-11:53 pm

2 stops12h 58m

San Diego

Sun 9/14

4:53 pm-12:55 pm

2 stops17h 02m

$243

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Fri 9/19

10:17 am-6:16 pm

1 stop10h 59m

San Diego

Sun 9/21

5:37 pm-9:17 am

1 stop12h 40m

$245

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 9/17

9:00 am-11:22 am

Nonstop5h 22m

San Diego

Tue 9/23

7:00 am-4:43 pm

1 stop6h 43m

$247

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 10/4

12:35 pm-5:17 pm

1 stop7h 42m

San Diego

Tue 10/7

12:00 pm-10:06 pm

1 stop7h 06m

$252

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 9/13

11:47 am-6:03 pm

1 stop9h 16m

San Diego

Sat 9/20

12:38 pm-10:48 pm

1 stop7h 10m

$256

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 9/10

5:52 pm-8:19 pm

Nonstop5h 27m

San Diego

Mon 9/15

8:33 am-4:52 pm

Nonstop5h 19m

$257

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and San Diego?

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of February, then departing from Washington, D.C. Dulles Intl Airport during the month May is also very affordable. Most momondo users find prices during this month for around $377.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $389. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $478. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is in the evening when flights can be purchased for as low as $339. Flights at noon are often more expensive with an average ticket price of $478.

What is the cheapest Washington, D.C. Dulles Intl to San Diego flight route?

Fly from Washington, D.C. Dulles Intl to San Diego for the best Washington, D.C. Dulles Intl - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from Washington, D.C. Dulles Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $412 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Washington, D.C. Dulles Intl Airport for as low as $341 on momondo.

What cabin class options are available on Washington, D.C. Dulles Intl to San Diego flights?

There are 4 cabin classes available to choose from on Washington, D.C. Dulles Intl to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to San Diego flights?

You could potentially save up to 29% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to San Diego flight.

How have Washington, D.C. Dulles Intl Airport to San Diego flight prices changed over time?

As of August 2025, prices for Washington, D.C. Dulles Intl Airport to San Diego flights are approximately 22% cheaper when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. Dulles Intl Airport to San Diego (IAD to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to San Diego

Best Price Found

$159

Fastest flight time

5h 15m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from Washington, D.C. Dulles Intl Airport in the past 72 hours is $159. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to San Diego found on momondo in the last 72 hours is $294.
The fastest flight from Washington, D.C. Dulles Intl Airport to San Diego takes 5h 15m
Direct flights go from Washington, D.C. Dulles Intl Airport to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • How far is Washington, D.C. Dulles Intl to San Diego by plane?

    There are 2245.8 mi between Washington, D.C. Dulles Intl and San Diego. 5h 22m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to San Diego Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to San Diego Airport are updated daily.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to San Diego Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. Dulles Intl Airport to San Diego?

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to San Diego?

Best airlines flying from Washington, D.C. Dulles Intl Airport to San Diego

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to San Diego with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $145Free CancellationRating
5.8
3,207 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $158Free CancellationRating
7.8
2,672 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $236Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $256Free CancellationRating
7.9
7,981 reviews
Search Delta flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $256Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
United AirlinesPriceFrom $262Free CancellationRating
7.4
8,930 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Washington, D.C. Dulles Intl Airport to San Diego

    Alaska Airlines flies from Washington, D.C. Dulles Intl Airport to San Diego around 5 times per week, with 10,000 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Washington, D.C. Dulles Intl Airport to San Diego in the last 72 hours was $236 (round-trip), much lower than the average airfare cost of $351 for Alaska Airlines flights on this route.

  • Hawaiian Airlines Flights From Washington, D.C. Dulles Intl Airport to San Diego

    Hawaiian Airlines (7.8/10 from 2,672 reviews) operates around 7 flights from Washington, D.C. Dulles Intl Airport to San Diego in any given week. The average Hawaiian Airlines airfare for this route is around $346, with deals from around $158 rare but found on momondo. Referenced prices are for round-trip Washington, D.C. Dulles Intl Airport to San Diego flight searches in the last 72 hours.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
La Mesa
National City
Imperial Beach
Poway
San Ysidro
Borrego Springs
Alpine
Lemon Grove
Santee

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to San Diego?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington, D.C. to San Diego. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington, D.C. to San Diego with flexible booking policies on momondo?

All flight searches from Washington, D.C. to San Diego on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to San Diego?

momondo provides multiple filters to help you find the best flight to San Diego from Washington, D.C.. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington, D.C. to San Diego right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Diego from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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