FlightsFrom Washington, D.C.

To San Diego

Cheap Flights from Washington, D.C. to San Diego

Browse current best options from Washington, D.C.. Become a member to unlock all deals and get alerts when new deals appear.

Deals from

Washington, D.C.

RatePunk searches hundreds of travel sites at once for deals on flights to San Diego

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Washington, D.C. to San Diego

Explore current cheapest deals departing from Washington, D.C. to San Diego

August 17 - August 24

Cheapest

IAD - San Diego

$413

$161

Round trip

August 20 - August 24

Cheapest

IAD - San Diego

$432

$161

Round trip

July 20 - August 12

Cheapest

IAD - San Diego

$445

$161

Round trip

July 20 - July 28

Cheapest

IAD - San Diego

$473

$161

Round trip

August 17 - August 31

IAD - San Diego

$380

$162

Round trip

August 20 - August 31

IAD - San Diego

$387

$162

Round trip

August 17 - August 20

IAD - San Diego

$432

$176

Round trip

July 20 - August 13

IAD - San Diego

$443

$191

Round trip

July 14 - July 21

Best
Earliest

IAD - San Diego

$492

$193

Round trip

August 10 - August 13

IAD - San Diego

$436

$208

Round trip

Unlock all 500+ flight deals to San Diego and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Washington, D.C. to San Diego

A typical journey from Washington, D.C. to San Diego takes about 12h 55m, including connections. This is a medium-haul route, covering a distance of 3618 kilometers. Given that most itineraries connect at least once, this duration reflects the time spent in transit as well as any layovers.
For travelers seeking cheap flights from Washington, D.C. to San Diego, prices typically range from $308–$505, with a median fare of $371. Right now, fares are below the typical level. Only 1% of recent fares were classified as a good price, indicating that finding exceptional value may require careful timing. New deals appear almost daily for this route, so setting up a price alert could be beneficial.
When is the cheapest time to fly from Washington, D.C. to San Diego? The data indicates that February is the most affordable month, with a median fare of $214. January also offers lower prices, with a median of $228. Following these, May presents another relatively cheaper option, with a median fare of $317.

How much is a round trip from Washington, D.C. to San Diego

Regular price: $318 - $434

Prices are currently below the regular range.

The regular price range for flights from Washington, D.C. to San Diego is $318 to $434. The current lowest deal is $161 with Frontier Airlines, for travel from Aug 17-Aug 24.

now $161

Low $318

High $434

The cheapest time to fly from Washington, D.C. to San Diego

The cheapest month to fly from Washington to San Diego is February, with a median price of $214. The most expensive month is November, with a median price of $483. Prices are generally lower from January to December.

February

Cheapest

Flights from $214

November

Most Expensive

Flights from $483

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Direct flights from Washington, D.C. to San Diego

Airline logo

Alaska Airlines, Inc.

Last-minute flights going from Washington, D.C. to San Diego

Thu, Jul 2

⌛ Last-Minute

IAD - San Diego

Frontier Airlines

Washington, D.C. (IAD) - San Diego (SAN)

Frontier Airlines

$472

$269

One-way

Thu, Jul 2

⌛ Last-Minute

IAD - San Diego

Frontier Airlines

Washington, D.C. (IAD) - San Diego (SAN)

Frontier Airlines

$518

$269

One-way

Thu, Jul 2

⌛ Last-Minute

IAD - San Diego

Frontier Airlines

Washington, D.C. (IAD) - San Diego (SAN)

Frontier Airlines

$509

$319

One-way

Thu, Jul 2

⌛ Last-Minute

IAD - San Diego

Frontier Airlines

Washington, D.C. (IAD) - San Diego (SAN)

Frontier Airlines

$518

$351

One-way

Sat, Jul 4

⌛ Last-Minute

IAD - San Diego

Frontier Airlines

Washington, D.C. (IAD) - San Diego (SAN)

Frontier Airlines

$534

$270

One-way

Sat, Jul 4

⌛ Last-Minute

IAD - San Diego

Frontier Airlines

Washington, D.C. (IAD) - San Diego (SAN)

Frontier Airlines

$534

$304

One-way

Biggest price drops on these dates for flights from Washington, D.C. to San Diego

8 nights

Jul 20 - Jul 28

$473  →  $161

66%

7 nights

Jul 14 - Jul 21

$492  →  $193

61%

23 nights

Jul 20 - Aug 12

$445  →  $161

64%

6 nights

Jul 15 - Jul 21

$492  →  $215

56%

Popular Airports to fly from Washington, D.C. to San Diego

Washington, D.C. - San Diego route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from Washington, D.C. to San Diego are below the typical level at $161.

📅 Best time to fly

February is historically cheapest at $214

Historically, February is the cheapest month to fly from Washington, D.C. to San Diego, at $214.

⏱️ Flight duration

Typically 12h 55m with connections

Flights from Washington, D.C. to San Diego typically take 12h 55m, with 33.1% being direct.

✈️ Airlines & availability

Connecting flights are dominant

Connecting flights are dominant on this route, with 2 median stopovers when connecting.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights

Alaska Airlines, Inc. offers direct flights from Washington, D.C. to San Diego.

🎯 Booking tip

Frequent deals on this route

Deals on flights from Washington, D.C. to San Diego are frequent, with 1.03 deals per day.

Washington, D.C. main airports to depart from

Washington Dulles International (IAD)

Cheapest

Washington Dulles International offers flights to San Diego, often with competitive pricing for your journey.

📍 ~40 km from Washington, D.C. (reachable by car or bus)

💸 Flights from ~$161

Baltimore–Washington International (BWI)

Baltimore–Washington International provides another option for flights from the Washington, D.C. area to San Diego.

📍 ~50 km from Washington, D.C. (reachable by car or train)

💸 Flights from ~$264

Ronald Reagan Washington National (DCA)

Ronald Reagan Washington National is a convenient choice for flights to San Diego from the Washington, D.C. area.

📍 ~5 km from Washington, D.C. (reachable by car or metro)

💸 Flights from ~$254

San Diego main airports to arrive at

San Diego International (SAN)

Cheapest

San Diego International is a convenient arrival airport for your trip to San Diego, California.

📍 ~5 km from San Diego city center (reachable by car)

💸 Flights from ~$161

McClellan–Palomar (CLD)

McClellan–Palomar is an alternative arrival airport for your trip to the San Diego area.

📍 ~50 km from San Diego city center (reachable by car)

💸 Flights from ~$393

Airports nearby San Diego used as alternative

Tijuana International (TIJ)

Tijuana International (TIJ) is an excellent alternative for Mexico flights, with direct access via the Cross Border Xpress.

📍 ~25 km from San Diego (reachable by car)

💸 Flights from ~$417

John Wayne (SNA)

John Wayne (SNA) is a close major US domestic alternative, often less congested than LAX.

📍 ~135 km from San Diego (reachable by car)

💸 Flights from ~$179

Los Angeles International (LAX)

Cheapest

Los Angeles International (LAX) offers the most extensive international and domestic route options.

📍 ~190 km from San Diego (reachable by car)

💸 Flights from ~$160

Ontario International (ONT)

Ontario International (ONT) is a reliable domestic alternative with growing service, often less congested.

📍 ~180 km from San Diego (reachable by car)

💸 Flights from ~$161

Long Beach (LGB)

Long Beach (LGB) is easy to navigate with fast security, good for specific West Coast routes.

📍 ~160 km from San Diego (reachable by car)

💸 Flights from ~$189

Business & First Class Flight Deals to San Diego

Discover luxury on the budget with premium cabin class on flights from Washington, D.C. to San Diego.

Elite

Best Elite deals to San Diego

Exclusive daily First Class, Business Class, and Premium Economy flight deals, refreshed every 24 hours.

From IAD

Elite

Sep 09

San Diego, United States

92% AI deal score

$2,566

$1,117

Save $1,449

From IAD

Elite

Nov 04

San Diego, United States

92% AI deal score

$2,617

$1,157

Save $1,460

From IAD

Elite

Nov 04

San Diego, United States

92% AI deal score

$2,605

$1,157

Save $1,448

From IAD

Elite

Sep 01

San Diego, United States

92% AI deal score

$2,559

$1,159

Save $1,400

From IAD

Elite

Sep 12

San Diego, United States

91% AI deal score

$2,446

$1,117

Save $1,329

From IAD

Elite

Sep 05

San Diego, United States

91% AI deal score

$2,451

$1,117

Save $1,334

From IAD

Elite

Sep 13

San Diego, United States

91% AI deal score

$2,448

$1,157

Save $1,291

From IAD

Elite

Sep 04

San Diego, United States

91% AI deal score

$2,433

$1,157

Save $1,276

From IAD

Elite

Sep 06

San Diego, United States

91% AI deal score

$2,453

$1,157

Save $1,296

From IAD

Elite

Sep 02

San Diego, United States

91% AI deal score

$2,435

$1,157

Save $1,278

From IAD

Elite

Sep 01

San Diego, United States

91% AI deal score

$2,367

$1,157

Save $1,210

From IAD

Elite

Sep 08

San Diego, United States

91% AI deal score

$2,526

$1,157

Save $1,369

From IAD

Elite

Aug 29

San Diego, United States

86% AI deal score

$1,680

$1,159

Save $521

From IAD

Elite

Aug 26

San Diego, United States

86% AI deal score

$1,626

$1,159

Save $467

From IAD

Elite

Oct 24

San Diego, United States

85% AI deal score

$1,510

$1,117

Save $393

From IAD

Elite

Aug 29

San Diego, United States

85% AI deal score

$1,571

$1,157

Save $414

From IAD

Elite

Aug 25

San Diego, United States

85% AI deal score

$1,557

$1,157

Save $400

From IAD

Elite

Aug 26

San Diego, United States

85% AI deal score

$1,564

$1,157

Save $407

From IAD

Elite

Aug 25

San Diego, United States

85% AI deal score

$1,613

$1,159

Save $454

From IAD

Elite

Aug 21

San Diego, United States

85% AI deal score

$1,463

$1,143

Save $320

From IAD

Elite

Sep 09

San Diego, United States

85% AI deal score

$1,378

$919

Save $459

From IAD

Elite

Oct 24

San Diego, United States

84% AI deal score

$1,468

$1,117

Save $351

From IAD

Elite

Aug 25

San Diego, United States

84% AI deal score

$1,313

$1,117

Save $196

From IAD

Elite

Aug 22

San Diego, United States

84% AI deal score

$1,313

$1,117

Save $196

From IAD

Elite

Aug 29

San Diego, United States

84% AI deal score

$1,302

$1,117

Save $185

From IAD

Elite

Nov 14

San Diego, United States

84% AI deal score

$1,422

$1,157

Save $265

From IAD

Elite

Oct 21

San Diego, United States

80% AI deal score

$1,454

$1,121

Save $333

From IAD

Elite

Sep 09

San Diego, United States

79% AI deal score

$1,341

$959

Save $382

From IAD

Elite

Sep 02

San Diego, United States

79% AI deal score

$1,339

$959

Save $380

From IAD

Elite

Sep 13

San Diego, United States

79% AI deal score

$1,331

$959

Save $372

From IAD

Elite

Sep 13

San Diego, United States

79% AI deal score

$1,308

$959

Save $349

From IAD

Elite

Sep 10

San Diego, United States

79% AI deal score

$1,341

$959

Save $382

From IAD

Elite

Sep 25

San Diego, United States

79% AI deal score

$1,390

$999

Save $391

From IAD

Elite

Sep 24

San Diego, United States

79% AI deal score

$1,353

$999

Save $354

From IAD

Elite

Oct 03

San Diego, United States

78% AI deal score

$1,389

$1,157

Save $232

From IAD

Elite

Oct 03

San Diego, United States

78% AI deal score

$1,389

$1,157

Save $232

From IAD

Elite

Oct 03

San Diego, United States

78% AI deal score

$1,389

$1,157

Save $232

From IAD

Elite

Aug 18

San Diego, United States

78% AI deal score

$1,316

$1,157

Save $159

From IAD

Elite

Aug 22

San Diego, United States

78% AI deal score

$1,306

$1,157

Save $149

From IAD

Elite

Aug 26

San Diego, United States

78% AI deal score

$1,221

$919

Save $302

From IAD

Elite

Aug 25

San Diego, United States

78% AI deal score

$1,229

$959

Save $270

From IAD

Elite

Aug 26

San Diego, United States

78% AI deal score

$1,229

$959

Save $270

From IAD

Elite

Sep 04

San Diego, United States

78% AI deal score

$1,295

$969

Save $326

From IAD

Elite

Sep 01

San Diego, United States

77% AI deal score

$1,260

$1,117

Save $143

From IAD

Elite

Aug 11

San Diego, United States

77% AI deal score

$1,295

$1,157

Save $138

From IAD

Elite

Aug 11

San Diego, United States

77% AI deal score

$1,189

$939

Save $250

From IAD

Elite

Oct 25

San Diego, United States

77% AI deal score

$1,139

$959

Save $180

From IAD

Elite

Aug 07

San Diego, United States

77% AI deal score

$1,220

$969

Save $251

From IAD

Elite

Aug 29

San Diego, United States

77% AI deal score

$1,212

$979

Save $233

From IAD

Elite

Jul 14

San Diego, United States

76% AI deal score

$1,035

$939

Save $96

From IAD

Elite

Oct 14

San Diego, United States

76% AI deal score

$1,152

$979

Save $173

From IAD

Elite

Aug 05

San Diego, United States

76% AI deal score

$1,190

$989

Save $201

From IAD

Elite

Oct 01

San Diego, United States

76% AI deal score

$1,163

$999

Save $164

From IAD

Elite

Jun 20

San Diego, United States

75% AI deal score

$1,861

$1,697

Save $164

From IAD

Elite

Jun 20

San Diego, United States

75% AI deal score

$1,830

$1,697

Save $133

From IAD

Elite

Jul 28

San Diego, United States

75% AI deal score

$1,052

$989

Save $63

From IAD

Elite

Oct 06

San Diego, United States

75% AI deal score

$1,158

$1,029

Save $129

From IAD

Elite

Jun 19

San Diego, United States

74% AI deal score

$1,869

$1,757

Save $112

From IAD

Elite

Nov 19

San Diego, United States

74% AI deal score

$1,048

$999

Save $49

From IAD

Elite

Nov 19

San Diego, United States

74% AI deal score

$1,065

$999

Save $66

From IAD

Elite

Jun 20

San Diego, United States

73% AI deal score

$1,697

From IAD

Elite

Jun 19

San Diego, United States

73% AI deal score

$1,761

$1,757

Save $4

From IAD

Elite

Oct 24

San Diego, United States

73% AI deal score

$1,381

$1,342

Save $39

From IAD

Elite

Oct 22

San Diego, United States

66% AI deal score

$1,928

From IAD

Elite

Oct 18

San Diego, United States

66% AI deal score

$1,928

From IAD

Elite

Oct 21

San Diego, United States

65% AI deal score

$2,003

From IAD

Elite

Oct 21

San Diego, United States

48% AI deal score

$2,308

From IAD

Elite

Oct 21

San Diego, United States

48% AI deal score

$2,829

Frequently Asked Questions About Flights to San Diego

Historically, the optimal booking window for flights from Washington, D.C. to San Diego is typically between 28 and 59 days before departure. During this period, the average price was $381. Prices tend to be significantly higher for last-minute bookings, with flights purchased 0-6 days out averaging $979. Even booking more than 60 days in advance saw a higher average price of $523, indicating that planning within the 28-59 day window is generally most cost-effective.

Across the trailing quarter, a flight from Washington, D.C. to San Diego is considered a good deal if it is priced at or below $308. The median price for this route was $371, while prices at the 75th percentile reached $505. By aiming for prices at or below the $308 threshold, travelers can secure a fare that is better than the majority of prices observed over the last 90 days.

Historically, February has been the cheapest month to fly from Washington, D.C. to San Diego, with a median price of $214. January also offered competitive fares, with a median price of $228. In contrast, May was observed to be the most expensive month, with a median price of $317, which is still lower than the annual median price of $371 for this route.