$149+ Cheap flights from Boston to San Diego (BOS - SAN)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
Jul 28 — Aug 41
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Boston 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.Cheapflights Tip: The best prices from Boston Logan Intl to San Diego are usually found in January or May, booked 76 days in advance, depart on a Tuesday or Wednesday and return on a Saturday
Cheap flight deals from Boston to San Diego
Cheapest
Best
Last-minute
One-way
Cheapest flights from Boston to San DiegoExplore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.
Explore the most affordable flight options available from Boston to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 28, 2026.
This Super.com deal was found by Cheapflights users on 6/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:10 am
BOS
- SAN
Nonstop6h 02m
JetBlue
Wed 7/158:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/25![JetBlue logo]()
$248
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/88:50 am
BOS
- SAN
Nonstop6h 06m
JetBlue
Sat 9/1910:40 am
SAN
- BOS
1 stop10h 14m
JetBlue
Deal found 6/24![JetBlue logo]()
$249
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Fri 8/143:45 pm
BOS
- SAN
1 stop8h 40m
United Airlines
Fri 8/212:15 pm
SAN
- BOS
1 stop7h 56m
United Airlines
Deal found 6/23![United Airlines logo]()
$252
This Southwest deal was found by Cheapflights users on 6/26. 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 12/98:20 am
BOS
- SAN
Nonstop6h 25m
Southwest
Wed 12/1611:20 am
SAN
- BOS
Nonstop5h 20m
Southwest
Deal found 6/26![Southwest logo]()
$253
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:01 am
BOS
- SAN
1 stop8h 51m
JetBlue
Sun 9/61:06 pm
SAN
- BOS
Nonstop5h 45m
JetBlue
Deal found 6/24![JetBlue logo]()
$254
This American Airlines deal was found by Cheapflights users on 6/25. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:27 am
BOS
- SAN
1 stop7h 40m
American Airlines
Sat 8/299:36 pm
SAN
- BOS
1 stop9h 36m
American Airlines
Deal found 6/25![American Airlines logo]()
$256
This Delta deal was found by Cheapflights users on 6/23. 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 8/185:20 pm
BOS
- SAN
Nonstop6h 15m
Delta
Tue 8/2510:02 pm
SAN
- BOS
Nonstop5h 38m
Delta
Deal found 6/23![Delta logo]()
$257
This American Airlines deal was found by Cheapflights users on 6/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:27 am
BOS
- SAN
1 stop7h 40m
American Airlines
Wed 8/2612:48 pm
SAN
- BOS
1 stop7h 36m
American Airlines
Deal found 6/27![American Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 6/26. 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 8/135:30 pm
BOS
- SAN
1 stop8h 15m
Southwest
Tue 8/183:55 pm
SAN
- BOS
Nonstop5h 30m
Southwest
Deal found 6/26![Southwest logo]()
$259
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Wed 9/25:01 pm
BOS
- SAN
1 stop8h 09m
United Airlines
Tue 9/82:15 pm
SAN
- BOS
1 stop7h 55m
United Airlines
Deal found 6/25![United Airlines logo]()
$260
This United Airlines deal was found by Cheapflights users on 6/26. 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 7/146:00 am
BOS
- SAN
1 stop8h 21m
United Airlines
Tue 7/2110:25 pm
SAN
- BOS
1 stop8h 04m
United Airlines
Deal found 6/26![United Airlines logo]()
$262
Best flights from Boston to San DiegoDiscover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 28, 2026.
Discover carefully curated flight deals from Boston to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 28, 2026.
This Alaska Airlines deal was found by Cheapflights users on 6/23. 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 12/85:45 pm
BOS
- SAN
Nonstop6h 23m
Alaska Airlines
Wed 12/98:40 am
SAN
- BOS
Nonstop5h 50m
Alaska Airlines
Deal found 6/23![Alaska Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 6/26. 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 8/144:30 pm
BOS
- SAN
1 stop8h 25m
Southwest
Wed 8/193:55 pm
SAN
- BOS
Nonstop5h 30m
Southwest
Deal found 6/26![Southwest logo]()
$268
This Delta deal was found by Cheapflights users on 6/27. 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 11/35:10 pm
BOS
- SAN
Nonstop6h 14m
Delta
Sun 11/89:34 pm
SAN
- BOS
Nonstop5h 38m
Delta
Deal found 6/27![Delta logo]()
$290
This JetBlue deal was found by Cheapflights users on 6/25. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:10 am
BOS
- SAN
Nonstop6h 02m
JetBlue
Wed 7/158:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/25![JetBlue logo]()
$297
This Southwest deal was found by Cheapflights users on 6/26. 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 8/143:25 pm
BOS
- SAN
2 stops9h 30m
Southwest
Mon 8/1710:40 pm
SAN
- BOS
1 stop8h 15m
Southwest
Deal found 6/26![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 6/27. 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.
Thu 9/175:10 pm
BOS
- SAN
Nonstop6h 05m
Delta
Sun 9/2010:04 pm
SAN
- BOS
Nonstop5h 36m
Delta
Deal found 6/27![Delta logo]()
$298
This Southwest deal was found by Cheapflights users on 6/24. 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 8/275:40 am
BOS
- SAN
1 stop9h 15m
Southwest
Mon 8/3110:10 am
SAN
- BOS
2 stops9h 00m
Southwest
Deal found 6/24![Southwest logo]()
$292
This JetBlue deal was found by Cheapflights users on 6/27. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:50 am
BOS
- SAN
Nonstop6h 05m
JetBlue
Wed 8/58:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/27![JetBlue logo]()
$347
This Delta deal was found by Cheapflights users on 6/25. 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 7/105:10 pm
BOS
- SAN
Nonstop6h 15m
Delta
Sun 7/1910:00 pm
SAN
- BOS
Nonstop5h 38m
Delta
Deal found 6/25![Delta logo]()
$332
This Southwest deal was found by Cheapflights users on 6/23. 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 9/249:40 am
BOS
- SAN
2 stops11h 30m
Southwest
Sat 9/267:25 pm
SAN
- BOS
1 stop13h 50m
Southwest
Deal found 6/23![Southwest logo]()
$326
This Southwest deal was found by Cheapflights users on 6/26. 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 7/273:55 pm
BOS
- SAN
1 stop10h 30m
Southwest
Tue 7/282:45 pm
SAN
- BOS
Nonstop5h 35m
Southwest
Deal found 6/26![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 6/25. 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 8/58:30 am
BOS
- SAN
1 stop9h 25m
Southwest
Sun 8/93:55 pm
SAN
- BOS
Nonstop5h 30m
Southwest
Deal found 6/25![Southwest logo]()
$342
Last-minute flights from Boston to San DiegoDiscover last-minute flight deals from Boston to San Diego. Data last updated June 28, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Diego. Data last updated June 28, 2026 and is based on user searches.
This Super.com deal was found by Cheapflights users on 6/25. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/96:10 am
BOS
- SAN
Nonstop6h 02m
JetBlue
Wed 7/158:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/25![JetBlue logo]()
$248
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/912:38 pm
BOS
- SAN
1 stop9h 42m
American Airlines
Mon 7/1310:28 pm
SAN
- BOS
1 stop7h 51m
American Airlines
Deal found 6/24![American Airlines logo]()
$267
This Delta deal was found by Cheapflights users on 6/24. 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.
Thu 7/95:10 pm
BOS
- SAN
Nonstop6h 15m
Delta
Thu 7/1610:00 pm
SAN
- BOS
Nonstop5h 38m
Delta
Deal found 6/24![Delta logo]()
$281
This American Airlines deal was found by Cheapflights users on 6/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:00 am
BOS
- SAN
1 stop7h 47m
American Airlines
Wed 7/229:55 pm
SAN
- BOS
1 stop7h 48m
American Airlines
Deal found 6/23![American Airlines logo]()
$257
This United Airlines deal was found by Cheapflights users on 6/26. 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 7/146:00 am
BOS
- SAN
1 stop8h 21m
United Airlines
Tue 7/2110:25 pm
SAN
- BOS
1 stop8h 04m
United Airlines
Deal found 6/26![United Airlines logo]()
$262
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:01 am
BOS
- SAN
1 stop8h 33m
JetBlue
Tue 7/218:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/25![JetBlue logo]()
$284
This Delta deal was found by Cheapflights users on 6/25. 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 7/155:10 pm
BOS
- SAN
Nonstop6h 15m
Delta
Sun 7/1910:00 pm
SAN
- BOS
Nonstop5h 38m
Delta
Deal found 6/25![Delta logo]()
$282
This Delta deal was found by Cheapflights users on 6/27. 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.
Thu 7/165:10 pm
BOS
- SAN
Nonstop6h 15m
Delta
Tue 7/2110:00 pm
SAN
- BOS
Nonstop5h 38m
Delta
Deal found 6/27![Delta logo]()
$277
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/236:05 am
BOS
- SAN
Nonstop6h 04m
JetBlue
Tue 7/288:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/24![JetBlue logo]()
$269
This Southwest deal was found by Cheapflights users on 6/23. 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 7/293:45 pm
BOS
- SAN
1 stop10h 40m
Southwest
Wed 8/123:55 pm
SAN
- BOS
Nonstop5h 30m
Southwest
Deal found 6/23![Southwest logo]()
$287
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:05 am
BOS
- SAN
Nonstop6h 04m
JetBlue
Mon 8/38:40 pm
SAN
- BOS
Nonstop5h 39m
JetBlue
Deal found 6/24![JetBlue logo]()
$274
One-way flights from Boston to San DiegoSearch for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
Search for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated June 28, 2026.
This Southwest deal was found by Cheapflights users on 6/23. 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 8/143:25 pm
BOS
- SAN
2 stops9h 30m
Southwest
Deal found 6/23![Southwest logo]()
$149
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Fri 12/114:25 pm
BOS
- SAN
1 stop8h 32m
United Airlines
Deal found 6/26![United Airlines logo]()
$150
This Southwest deal was found by Cheapflights users on 6/23. 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 9/292:45 pm
BOS
- SAN
2 stops10h 15m
Southwest
Deal found 6/23![Southwest logo]()
$152
This Expedia deal was found by Cheapflights users on 6/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:50 am
BOS
- SAN
Nonstop6h 21m
Alaska Airlines
Deal found 6/26![Alaska Airlines logo]()
$153
This Delta deal was found by Cheapflights users on 6/23. 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 10/105:15 pm
BOS
- SAN
Nonstop6h 33m
Delta
Deal found 6/23![Delta logo]()
$154
This Southwest deal was found by Cheapflights users on 6/23. 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 8/239:55 pm
BOS
- SAN
2 stops15h 25m
Southwest
Deal found 6/23![Southwest logo]()
$155
This Cheapflightsfares deal was found by Cheapflights users on 6/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/75:01 am
BOS
- SAN
1 stop8h 17m
JetBlue
Deal found 6/24![JetBlue logo]()
$156
This Expedia deal was found by Cheapflights users on 6/26. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:17 pm
BOS
- SAN
Nonstop6h 13m
Alaska Airlines
Deal found 6/26![Alaska Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 6/23. 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 8/1711:59 am
BOS
- SAN
2 stops35h 16m
Frontier
Deal found 6/23![Frontier logo]()
$158
This Delta deal was found by Cheapflights users on 6/25. 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 8/175:20 pm
BOS
- SAN
Nonstop6h 15m
Delta
Deal found 6/25![Delta logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 8/2412:45 pm
BOS
- SAN
1 stop26h 24m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$160
Find flight deals from Boston to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $248 (Super.com) |
One-way from | $149 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $405 |
Good round-trip deal | $308 or less |
Good one-way deal | $203 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Boston 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 2,558,603 searches. Data last updated June 28, 2026.
Use the filters below to find and compare flights from Boston to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Tue 12/8
5:45 pm-9:08 pm
Nonstop6h 23m
San Diego
Wed 12/9
8:40 am-5:30 pm
Nonstop5h 50m
$257
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Fri 8/14
4:30 pm-9:55 pm
1 stop8h 25m
San Diego
Wed 8/19
3:55 pm-12:25 am
Nonstop5h 30m
$268
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Fri 8/14
3:25 pm-9:55 pm
2 stops9h 30m
San Diego
Mon 8/17
10:40 pm-9:55 am
1 stop8h 15m
$283
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Tue 11/3
5:10 pm-8:24 pm
Nonstop6h 14m
San Diego
Sun 11/8
9:34 pm-6:12 am
Nonstop5h 38m
$290
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 8/27
5:40 am-11:55 am
1 stop9h 15m
San Diego
Mon 8/31
10:10 am-10:10 pm
2 stops9h 00m
$292
Quickest round-trip
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 7/9
6:10 am-9:12 am
Nonstop6h 02m
San Diego
Wed 7/15
8:40 pm-5:19 am
Nonstop5h 39m
$297
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 9/17
5:10 pm-8:15 pm
Nonstop6h 05m
San Diego
Sun 9/20
10:04 pm-6:40 am
Nonstop5h 36m
$298
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Thu 9/24
9:40 am-6:10 pm
2 stops11h 30m
San Diego
Sat 9/26
7:25 pm-12:15 pm
1 stop13h 50m
$326
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Fri 7/10
5:10 pm-8:25 pm
Nonstop6h 15m
San Diego
Sun 7/19
10:00 pm-6:38 am
Nonstop5h 38m
$332
BostonSan Diego
BOS - SAN
BOSSAN
Boston Logan Intl
Mon 7/27
3:55 pm-11:25 pm
1 stop10h 30m
San Diego
Tue 7/28
2:45 pm-11:20 pm
Nonstop5h 35m
$342
Showing 1-10 of 23 resultsSorted by cheapest first
Compare providers for flights from Boston to San Diego
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to San Diego in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Boston-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Boston-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Boston to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Boston with our price prediction graph.
BOS-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 Boston to San Diego
Prices
Airlines
Delays
How far ahead should I book a flight from Boston to San Diego?
The price you pay for your flight from Boston to San Diego may vary depending on when you book. For the best chance of a lower fare, look to book 75 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Boston to San Diego?
Currently, January is the cheapest month in which you can book a flight from Boston to San Diego (average of $326). Flying from Boston to San Diego in December is currently the most expensive (average of $468). 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 BOS to SAN?
Find hourly flight availability from Boston 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 June 28, 2026.
When flying from Boston to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How often are flights from Boston to San Diego delayed?
About 15% of weekly flights between Boston and San Diego have experienced delays in the past year, with the average delay time being 160 minutes.
What is the most punctual flight time for Boston to San Diego flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Thursday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to San Diego flights?
Over the last year, JetBlue have had the lowest number of delays on this route, with just 11% of flights being delayed.
The best insider tips for Boston to San Diego flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Boston to San Diego trip
Our travel experts
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated June 28, 2026.
Get a feel of what it's like to fly with Alaska Airlines,Southwest, andDelta from Boston to San Diego by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Comfort
7.8
Overall
7.9
Food
7.0
Entertainment
7.0
Boarding
8.1
Crew
8.5
Reviews
1 / 20
10.0
Excellentrobert,Feb 2026
LAS - SAN
Related info for your journey
Find useful and relevant information for your journey from Boston 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
Poway
Coronado
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
Other flights from Boston
Popular flights
San Diego flight routes
Alternative routes for Boston 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 Boston to San Diego by cabin class
Find flights from Boston to San Diego, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Boston and San Diego flights
Browse other Boston and San Diego flight options. Last updated on June 28, 2026.
Other flights from Boston
Browse through other flights departing from Boston. Flights are based on user searches made on Cheapflights and were last updated on June 28, 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 June 28, 2026.
Top 7 airlines flying from Boston to San Diego
Discover the top 7 airlines that operate flights from Boston 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 2,558,603 searches. Data last updated June 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$374 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$129 | Average$350 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$168 | Average$363 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$212 | Average$405 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$389 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$244 | Average$451 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$276 | Average$397 | FlexibilityNo cancel fee | On-time63% |