Seattle to San Diego: what the flight costs
In the last 60 days we checked this route 16 times. The typical return was £344 per person and the lowest £312, taxes and fees included.
| Per person | |
|---|---|
| Lowest seen | £312 |
| Typical (median) | £344 |
| Price checks, 60 days | 16 |
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Trips we picked on this route
Just found · from SeattleWorth it, if
San Diego
16 – 18 Oct 2026 · 2 nights
- $430 per person, $26 below the typical fare on this route
- Hostel rated 9 from 1,716 reviews, breakfast and free cancellation
- Highs of 86–90°F with rain chances of 7% or less
£848 for two · 2 nights · flights, hotel, taxes & fees
Flights £648 + hotel £200, taxes in · a checked bag each adds about £181
Frontier · with a stop · 7h 29m
The catch: You get one stop and 7h 29m on Frontier, the beds are in an 8-bed dorm, and a checked bag is about $240 for two, not in the total.
Worth it if you're fine with dorm beds and a stop to keep the weekend at $1,125; skip it if you want a private room or the nonstop.
Every fare we found in the last 30 days
| Checked | Trip dates | Per person | Airline | Stops | Duration | Source |
|---|---|---|---|---|---|---|
| 14 Oct 2026 | 23 – 25 Oct 2026 | £377 | Frontier | with a stop | 7h 29m | Google Flights |
| 14 Oct 2026 | 16 – 18 Oct 2026 | £324 | Frontier | with a stop | 7h 29m | Google Flights |
| 14 Oct 2026 | 23 – 25 Oct 2026 | £335 | F9 | with a stop | 7h 29m | Kiwi.com |
| 14 Oct 2026 | 16 – 18 Oct 2026 | £350 | F9 | with a stop | 7h 29m | Kiwi.com |
| 14 Oct 2026 | 16 – 18 Oct 2026 | £324 | Frontier | with a stop | 7h 29m | Google Flights |
| 14 Oct 2026 | 16 – 18 Oct 2026 | £345 | F9 | with a stop | 7h 29m | Kiwi.com |
| 13 Oct 2026 | 16 – 18 Oct 2026 | £344 | F9 | with a stop | 7h 29m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £345 | F9 | with a stop | 7h 29m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £324 | Frontier | with a stop | 7h 29m | Google Flights |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £385 | F9 + AS | with a stop | 7h 29m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £344 | F9 | with a stop | 7h 29m | Kiwi.com |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £384 | F9 + AS | with a stop | 7h 29m | Kiwi.com |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £312 | Frontier | with a stop | 7h 29m | Google Flights |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £317 | Frontier | with a stop | 7h 29m | Google Flights |
| 12 Oct 2026 | 23 – 25 Oct 2026 | £383 | F9 + AS | with a stop | 7h 29m | Kiwi.com |
| 12 Oct 2026 | 16 – 18 Oct 2026 | £338 | F9 | with a stop | 7h 29m | Kiwi.com |
About San Diego
San Diego has the most reliable beach weather in the country, plus the famous zoo, Balboa Park, fish tacos and a laid-back surf culture.
San Diego from every city: when to go, where to stay, what to do
Questions about Seattle to San Diego
What does a return from Seattle to San Diego usually cost?
Over the last 60 days the typical price we found was £344 per person, taxes and fees included, across 16 checks; the lowest was £312.
When is the best time to fly from Seattle to San Diego?
San Diego is at its best in March, April, May, August, September, October and November. Avoid June: June Gloom marine layer
Do I need a passport to fly from Seattle to San Diego?
No passport needed for travellers from the United States: a government photo ID is enough for San Diego.
Prices converted from US dollars at the rate of 15 Oct 2026.