$69+ Cheap flights from Washington to San Diego (SAN)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — SAN
Oct 18 — Oct 251
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Washington to San Diego 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.Cheap flight deals from Washington to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Washington to San DiegoExplore the most affordable flight options available from Washington to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
Explore the most affordable flight options available from Washington to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/59:00 am -
Nonstop2h 27m
Thu 12/104:13 pm -
Nonstop2h 45m
Deal found 9/17![Alaska Airlines logo]()
$137
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:19 am -
Nonstop2h 52m
Wed 11/46:45 pm -
Nonstop2h 50m
Deal found 9/16![Alaska Airlines logo]()
$140
This Travelocity deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:38 pm -
Nonstop2h 42m
Wed 10/2111:04 am -
Nonstop2h 46m
Deal found 9/18![Alaska Airlines logo]()
$141
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:00 am -
Nonstop2h 25m
Wed 10/2811:00 am -
1 stop3h 55m
Deal found 9/18![Southwest logo]()
$143
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:19 am -
Nonstop2h 52m
Tue 10/206:51 pm -
Nonstop2h 49m
Deal found 9/15![Alaska Airlines logo]()
$146
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:10 pm -
Nonstop2h 25m
Thu 10/156:00 pm -
1 stop5h 10m
Deal found 9/17![Southwest logo]()
$147
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:19 am -
Nonstop2h 52m
Mon 11/26:45 pm -
Nonstop2h 50m
Deal found 9/16![Alaska Airlines logo]()
$149
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:45 am -
Nonstop2h 45m
Wed 10/288:15 am -
1 stop5h 00m
Deal found 9/13![Southwest logo]()
$150
This Travelocity deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:04 pm -
Nonstop2h 33m
Mon 11/238:37 pm -
Nonstop2h 50m
Deal found 9/18![Alaska Airlines logo]()
$150
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:50 am -
1 stop4h 50m
Mon 10/267:00 pm -
1 stop4h 10m
Deal found 9/18![Southwest logo]()
$152
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:35 pm -
Nonstop2h 51m
Thu 10/156:27 pm -
Nonstop3h 06m
Deal found 9/18![Alaska Airlines logo]()
$153
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:19 am -
Nonstop2h 52m
Wed 10/217:59 pm -
Nonstop2h 51m
Deal found 9/17![Alaska Airlines logo]()
$154
Best flights from Washington to San DiegoDiscover carefully curated flight deals from Washington to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
Discover carefully curated flight deals from Washington to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 18, 2026.
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2910:30 am -
Nonstop2h 42m
Sat 10/312:10 pm -
Nonstop2h 41m
Deal found 9/17![Alaska Airlines logo]()
$137
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:45 am -
Nonstop2h 45m
Wed 10/288:15 am -
1 stop5h 00m
Deal found 9/13![Southwest logo]()
$150
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/174:30 pm -
1 stop6h 21m
Tue 10/206:57 pm -
1 stop4h 53m
Deal found 9/18![Delta logo]()
$177
This United Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:00 am -
1 stop6h 47m
Wed 11/1112:37 pm -
1 stop6h 04m
Deal found 9/17![United Airlines logo]()
$207
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/49:00 am -
Nonstop2h 27m
Thu 12/105:58 pm -
Nonstop2h 52m
Deal found 9/17![Alaska Airlines logo]()
$172
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/145:00 pm -
1 stop5h 33m
Mon 11/167:20 am -
1 stop7h 26m
Deal found 9/14![Delta logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/267:19 am -
Nonstop2h 52m
Fri 10/307:59 pm -
Nonstop2h 51m
Deal found 9/16![Alaska Airlines logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:43 pm -
2 stops43h 33m
Thu 10/228:34 pm -
1 stop23h 52m
Deal found 9/15![Multiple Airlines logo]()
$403
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:00 am -
Nonstop2h 25m
Sat 10/314:25 pm -
Nonstop2h 35m
Deal found 9/16![Southwest logo]()
$203
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:15 am -
1 stop5h 00m
Tue 12/82:30 pm -
1 stop7h 28m
Deal found 9/16![United Airlines logo]()
$227
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:59 am -
Nonstop2h 59m
Mon 10/2611:02 am -
Nonstop3h 16m
Deal found 9/17![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/25:25 pm -
1 stop4h 25m
Sat 12/59:05 am -
Nonstop2h 40m
Deal found 9/15![Southwest logo]()
$213
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/269:08 pm -
Nonstop2h 51m
Mon 11/27:45 pm -
Nonstop3h 12m
Deal found 9/17![Alaska Airlines logo]()
$200
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:05 am -
1 stop5h 00m
Tue 10/277:05 am -
Nonstop3h 05m
Deal found 9/15![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:59 am -
Nonstop2h 59m
Mon 10/267:45 am -
Nonstop3h 13m
Deal found 9/14![Delta logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/115:52 pm -
Nonstop2h 35m
Mon 11/168:07 pm -
Nonstop2h 45m
Deal found 9/16![Alaska Airlines logo]()
$205
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:50 pm -
1 stop5h 25m
Mon 10/266:00 pm -
Nonstop3h 05m
Deal found 9/16![Southwest logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/95:00 am -
1 stop4h 53m
Thu 11/126:45 pm -
Nonstop2h 50m
Deal found 9/15![Alaska Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:41 pm -
1 stop5h 13m
Sun 11/221:49 pm -
1 stop5h 08m
Deal found 9/18![Delta logo]()
$230
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:10 pm -
Nonstop2h 50m
Fri 10/306:50 am -
1 stop6h 40m
Deal found 9/16![Southwest logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/153:04 pm -
Nonstop2h 33m
Tue 11/172:11 pm -
Nonstop2h 39m
Deal found 9/15![Alaska Airlines logo]()
$215
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/53:35 pm -
Nonstop2h 20m
Sat 11/712:25 pm -
2 stops7h 25m
Deal found 9/13![Southwest logo]()
$217
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:11 pm -
1 stop5h 00m
Mon 12/76:22 pm -
Nonstop3h 14m
Deal found 9/16![Alaska Airlines logo]()
$217
This Southwest deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/257:45 am -
Nonstop2h 25m
Wed 10/284:15 pm -
2 stops5h 15m
Deal found 9/16![Southwest logo]()
$220
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/35:15 am -
2 stops6h 30m
Mon 12/77:20 am -
Nonstop3h 05m
Deal found 9/15![Southwest logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/275:45 pm -
1 stop14h 51m
Wed 10/2811:04 am -
Nonstop2h 46m
Deal found 9/17![Alaska Airlines logo]()
$222
This Alaska Airlines deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/161:49 pm -
Nonstop2h 33m
Mon 10/196:00 pm -
Nonstop2h 40m
Deal found 9/18![Alaska Airlines logo]()
$224
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:15 pm -
Nonstop2h 45m
Sat 10/104:05 pm -
1 stop4h 20m
Deal found 9/13![Southwest logo]()
$227
This Delta deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:45 pm -
1 stop5h 06m
Sat 10/247:45 am -
1 stop7h 05m
Deal found 9/17![Delta logo]()
$341
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:48 pm -
Nonstop2h 49m
Sun 11/156:15 am -
Nonstop3h 12m
Deal found 9/15![Alaska Airlines logo]()
$227
Last-minute flights from Washington to San DiegoDiscover last-minute flight deals from Washington to San Diego. Data last updated September 18, 2026 and is based on user searches.
Discover last-minute flight deals from Washington to San Diego. Data last updated September 18, 2026 and is based on user searches.
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/102:10 pm -
Nonstop2h 25m
Thu 10/156:00 pm -
1 stop5h 10m
Deal found 9/17![Southwest logo]()
$147
This Trip.com deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/108:35 pm -
Nonstop2h 51m
Thu 10/156:27 pm -
Nonstop3h 06m
Deal found 9/18![Alaska Airlines logo]()
$153
This Orbitz deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/101:49 pm -
Nonstop2h 33m
Thu 10/156:53 am -
Nonstop2h 38m
Deal found 9/18![Alaska Airlines logo]()
$154
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:19 am -
Nonstop2h 52m
Tue 10/206:51 pm -
Nonstop2h 49m
Deal found 9/15![Alaska Airlines logo]()
$146
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/147:19 am -
Nonstop2h 52m
Wed 10/217:59 pm -
Nonstop2h 51m
Deal found 9/17![Alaska Airlines logo]()
$154
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:00 am -
Nonstop2h 25m
Thu 10/225:00 pm -
Nonstop2h 35m
Deal found 9/17![Southwest logo]()
$137
This Travelocity deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:38 pm -
Nonstop2h 42m
Wed 10/2111:04 am -
Nonstop2h 46m
Deal found 9/18![Alaska Airlines logo]()
$141
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:50 am -
1 stop4h 50m
Mon 10/267:00 pm -
1 stop4h 10m
Deal found 9/18![Southwest logo]()
$152
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/2410:45 am -
Nonstop2h 45m
Wed 10/288:15 am -
1 stop5h 00m
Deal found 9/13![Southwest logo]()
$150
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/268:00 am -
Nonstop2h 25m
Wed 10/2811:00 am -
1 stop3h 55m
Deal found 9/18![Southwest logo]()
$143
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:19 am -
Nonstop2h 52m
Wed 11/46:45 pm -
Nonstop2h 50m
Deal found 9/16![Alaska Airlines logo]()
$140
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/287:19 am -
Nonstop2h 52m
Mon 11/26:45 pm -
Nonstop2h 50m
Deal found 9/16![Alaska Airlines logo]()
$149
One-way flights from Washington to San DiegoSearch for one-way flight options from Washington to San Diego. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
Search for one-way flight options from Washington to San Diego. Find affordable one-way fares based on user searches. Data last updated September 18, 2026.
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/83:35 pm -
Nonstop2h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Southwest logo]()
$69
This Alaska Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/157:07 am -
Nonstop2h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Alaska Airlines logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:00 pm -
2 stops21h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Frontier logo]()
$77
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/297:40 am -
Nonstop2h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$79
This Alaska Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/147:07 am -
Nonstop2h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Alaska Airlines logo]()
$79
This Southwest deal was found by Cheapflights users on 9/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:20 pm -
1 stop5h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/18![Southwest logo]()
$79
This Delta deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/165:00 am -
1 stop5h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Delta logo]()
$80
This Southwest deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:30 am -
1 stop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/17![Southwest logo]()
$84
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:19 am -
Nonstop2h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Alaska Airlines logo]()
$84
This Southwest deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:40 am -
2 stops5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Southwest logo]()
$85
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/135:40 am -
2 stops5h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$86
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/169:33 am -
1 stop5h 17m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Delta logo]()
$89
Find flight deals from Washington to San Diego
Keep the following information in mind while searching for Washington to San Diego flight deals. Data was last updated September 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $137 (Alaska Airlines) |
One-way from | $69 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $214 |
Good round-trip deal | $171 or less |
Good one-way deal | $88 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Washington 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, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
Use the filters below to find and compare flights from Washington to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandSan Diego
PDX Portland - SAN San Diego
PDXSAN
Portland
Sat 10/10
8:00 am-10:25 am
Nonstop2h 25m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$69
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Tue 11/17
7:03 am-9:53 am
Nonstop2h 50m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$70
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Wed 11/18
7:03 am-9:53 am
Nonstop2h 50m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$70
SeattleSan Diego
SEA Seattle/Tacoma Intl - SAN San Diego
SEASAN
Seattle/Tacoma Intl
Sat 10/17
7:50 am-10:45 am
Nonstop2h 55m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$79
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Wed 12/16
7:07 am-10:02 am
Nonstop2h 55m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$84
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Tue 12/15
7:35 am-5:00 pm
2 stops9h 25m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$85
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Tue 10/13
5:40 am-11:35 am
2 stops5h 55m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$86
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Sat 10/17
4:30 pm-10:51 pm
1 stop6h 21m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$89
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Thu 11/12
7:00 am-12:48 pm
1 stop5h 48m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$89
SpokaneSan Diego
GEG Spokane - SAN San Diego
GEGSAN
Spokane
Sat 10/10
7:19 am-10:11 am
Nonstop2h 52m
San Diego
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$89
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Washington to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Washington with our price prediction graph.
PDX-SAN
GEG-SAN
PSC-SAN
SEA-SAN
PAE-SAN
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 Washington to San Diego
USWA-SAN
PDX-SAN
GEG-SAN
PSC-SAN
SEA-SAN
What is the cheapest month to book a flight from State of Washington to San Diego?
Currently, January is the cheapest month in which you can book a flight from State of Washington to San Diego (average of $205). Flying from State of Washington to San Diego in December is currently the most expensive (average of $324). 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 WA to SAN?
Find hourly flight availability from Washington to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 18, 2026.
Unlike in the morning, when flights are generally more expensive, you can save up to 23% on flights from State of Washington to San Diego by exploring options for tickets in the evening.
Weekly flight availability from State of Washington to San Diego
Explore weekly flight availability from Washington to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 18, 2026.
The most flights from USWA to SAN are scheduled on a Thursday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).
How much does it cost to fly round-trip from State of Washington to San Diego?
Airfare is below average for this route at the moment.
State of Washington to San Diego flights typically cost between $157 and $334 in October.The cheapest round-trip price found within the last 5 days was $153 on Alaska Airlines (Oct 10-Oct 15).
How far ahead should I book a flight from State of Washington to San Diego?
To ensure you get the cheapest price possible for a flight from State of Washington to San Diego, you should look to book at least 87 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest day to fly from State of Washington to San Diego?
Use this chart to determine the cheapest time to fly round-trip from Washington to San Diego. Price data was last updated on May 30, 2026.
Travelers seeking maximum savings on their State of Washington to San Diego flight should consider departing on Wednesday mornings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Washington to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
Chula Vista
Coronado
San Ysidro
Poway
La Mesa
Santee
Julian
Lemon Grove
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
Complete your trip
Flights by cabin class
Other flight options
Popular flights
San Diego flight routes
Top destinations
Alternative routes for Washington to San Diego
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Diego by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Washington to San Diego by cabin class
Find flights from Washington to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Washington and San Diego flights
Browse other Washington and San Diego flight options. Last updated on September 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Diego
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 18, 2026.
Washington to San Diego flights
Consider these flights traveling from Washington to San Diego.
Top 7 airlines flying from Washington to San Diego
Discover the top 7 airlines that operate flights from Washington to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$87 | Average$234 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$108 | Average$287 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$117 | Average$266 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$119 | Average$385 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$178 | Average$384 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$187 | Average$329 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$227 | Average$498 | FlexibilityNo cancel fee | On-time71% |