Flights San Diego → Washington DC
As of November 2026, economy flights from San Diego to Washington DC have a typical range USD 576–912, median USD 725. Full range across all 198 offers: USD 406–1193. We found 21% of 198 offers from budget carriers (around USD 706) and 79% from full-service carriers (around USD 733).
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: San Diego → Washington DC
Based on 198 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: San Diego → Washington DC
Add-on pricing from the cheapest available offer per airline · November 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Frontier | — | — | — |
| JetBlue | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| Southwest | — | Included | — |
| Alaska Airlines | Included | USD 35 | — |
| United Airlines | Included | USD 35 | — |
| JetBlue | — | USD 94 | — |
| United | — | USD 95 | — |
| American | — | USD 100 | — |
| Southwest | — | USD 90 | — |
| Alaska | — | USD 90 | — |
| Delta | Included | USD 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from San Diego to Washington DC cost?
Based on 198 offers · November 2026
San Diego to Washington DC flights ranged from USD 406 to USD 1193 across 198 offers analyzed in November 2026. Two fare clusters detected: budget fares around 760 and premium fares around 918 The chart below shows how prices distributed across all 198 offers.
These 198 offers (November 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between USD 673 and USD 753
What hidden fees do San Diego to Washington DC flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on San Diego to Washington DC routes. The breakdown below is based on 198 offers analyzed in November 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| F9 | 10 | 2% |
| B6 | 45 | 10% |
| AA | 45 | 6% |
| WN | 18 | 2% |
| AS | 33 | 5% |
| UA | 45 | 7% |
| JetBlue | 94 | 17% |
| United | 96 | 17% |
| American | 100 | 15% |
| Southwest | 90 | 14% |
| Alaska | 90 | 10% |
| DL | 45 | 4% |
American: base ~USD 606 + fees USD 100 = ~USD 706 total. Southwest Airlines: base ~USD 715 + fees USD 18 = ~USD 733 total.
American's USD 100 ancillary fees narrow the gap with Southwest Airlines's lower-fee model — the USD 109 base difference shrinks to USD 27 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from San Diego to Washington DC?
14 airlines flew San Diego to Washington DC in this dataset. The route shows a clear split between low-cost and full-service carriers. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 B6 | 1 | — | 458 | 45 (10%) |
 F9|WN | 1 | — | 520 | n/a |
 Frontier Airlines | 4 | 521–567 | 524 | 10 (2%) |
 JetBlue | 3 | 536–568 | 568 | 94 (17%) |
 United | 7 | 568–585 | 568 | 96 (17%) |
 Frontier | 5 | 475–681 | 626 | n/a |
 Southwest | 3 | 627–669 | 665 | 90 (14%) |
 United Airlines | 4 | 572–690 | 681 | 45 (7%) |
 Alaska Airlines | 6 | 508–770 | 685 | 33 (5%) |
 American | 8 | 568–718 | 706 | 100 (14%) |
 Southwest Airlines | 121 | 657–937 | 733 | 18 (2%) |
 American Airlines | 32 | 646–745 | 736 | 45 (6%) |
 Alaska | 2 | 785–965 | 875 | 90 (10%) |
 Delta Air Lines | 1 | — | 1193 | 45 (4%) |
Where do the best San Diego → Washington DC prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: San Diego to Washington DC flights
- Full-service carriers on San Diego–Washington DC cost 1.3x more than budget airlines (USD 746 vs USD 596 median; overall median USD 725).
- American charges 10.0x more in ancillary fees than F9 — USD 100 vs USD 10 avg per booking.
- The same route priced USD 414 apart depending on where it was booked — the lowest median was USD 513. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from San Diego to Washington DC cost?
- Based on 198 offers analyzed, San Diego to Washington DC flights range from USD 406 to USD 1193, with a median price of USD 725. Search for your specific dates →
- What hidden fees should I expect on San Diego to Washington DC flights?
- On average, ancillary fees (bags, seat selection) add USD 33 to the base fare on San Diego to Washington DC flights. See itemized fees for your itinerary →
- Which airline is cheapest on San Diego to Washington DC including all fees?
- B6 has the lowest median fare on San Diego to Washington DC at USD 458 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest San Diego–Washington DC flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was USD 513. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on San Diego to Washington DC routes?
- San Diego to Washington DC has 14 airlines competing, creating a price range from USD 406 to USD 1193 across 198 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
14 airlines, two price clusters — find which fits your budget
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