$136+ 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SAN
Sep 13 — Sep 201
Round-trip
1 adult, Economy
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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 53 days in advance, depart on a Wednesday or Tuesday 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 August 14, 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 August 14, 2026.
This United Airlines deal was found by Cheapflights users on 8/9. 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.
Sat 9/129:30 am -
1 stop8h 27m
Sat 9/192:15 pm -
1 stop7h 55m
Deal found 8/9![United Airlines logo]()
$252
This Super.com deal was found by Cheapflights users on 8/10. 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.
Wed 9/304:00 pm -
Nonstop6h 07m
Fri 10/98:40 pm -
Nonstop5h 44m
Deal found 8/10![JetBlue logo]()
$254
This Super.com deal was found by Cheapflights users on 8/9. 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.
Tue 9/299:30 am -
Nonstop6h 04m
Wed 10/78:25 pm -
Nonstop6h 06m
Deal found 8/9![JetBlue logo]()
$255
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/411:50 am -
1 stop8h 36m
Sat 9/122:15 pm -
1 stop7h 55m
Deal found 8/11![United Airlines logo]()
$256
This Delta deal was found by Cheapflights users on 8/12. 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 10/205:39 am -
1 stop7h 41m
Sat 10/249:53 pm -
Nonstop5h 42m
Deal found 8/12![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 8/12. 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 9/113:55 pm -
1 stop10h 05m
Sun 9/133:55 pm -
Nonstop5h 35m
Deal found 8/12![Southwest logo]()
$258
This Super.com deal was found by Cheapflights users on 8/9. 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.
Fri 9/43:50 pm -
Nonstop6h 06m
Tue 9/88:17 pm -
Nonstop5h 43m
Deal found 8/9![JetBlue logo]()
$259
This Southwest deal was found by Cheapflights users on 8/10. 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 9/58:40 am -
2 stops11h 30m
Sun 9/610:40 pm -
1 stop7h 20m
Deal found 8/10![Southwest logo]()
$260
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Fri 10/24:29 pm -
1 stop9h 56m
Tue 10/69:30 pm -
1 stop8h 10m
Deal found 8/11![American Airlines logo]()
$261
This Southwest deal was found by Cheapflights users on 8/9. 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 9/58:40 am -
2 stops11h 30m
Sat 9/123:55 pm -
Nonstop5h 35m
Deal found 8/9![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/211:55 am -
1 stop8h 05m
Fri 9/42:15 pm -
1 stop7h 56m
Deal found 8/10![United Airlines logo]()
$263
This American Airlines deal was found by Cheapflights users on 8/11. 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 10/14:29 pm -
1 stop9h 56m
Sun 10/410:51 pm -
1 stop10h 15m
Deal found 8/11![American Airlines logo]()
$264
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 August 14, 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 August 14, 2026.
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:10 pm -
Nonstop6h 05m
Mon 9/2810:04 pm -
Nonstop5h 36m
Deal found 8/13![Delta logo]()
$267
This Southwest deal was found by Cheapflights users on 8/9. 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 9/58:40 am -
2 stops11h 30m
Wed 9/910:40 pm -
1 stop7h 20m
Deal found 8/9![Southwest logo]()
$272
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 9/311:50 am -
1 stop8h 36m
Tue 9/810:30 pm -
1 stop8h 03m
Deal found 8/10![United Airlines logo]()
$317
This Alaska Airlines deal was found by Cheapflights users on 8/11. 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 10/277:51 am -
Nonstop6h 18m
Sun 11/86:16 am -
1 stop14h 42m
Deal found 8/11![Alaska Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 8/11. 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 10/16:05 pm -
1 stop9h 25m
Sun 10/43:00 pm -
Nonstop5h 30m
Deal found 8/11![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:30 pm -
1 stop9h 25m
Sun 9/1310:04 pm -
Nonstop5h 36m
Deal found 8/13![Delta logo]()
$294
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:10 pm -
Nonstop6h 05m
Tue 9/2910:04 pm -
Nonstop5h 36m
Deal found 8/13![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 8/13. 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.
Tue 9/82:30 pm -
1 stop9h 20m
Thu 9/103:55 pm -
Nonstop5h 35m
Deal found 8/13![Southwest logo]()
$301
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/315:15 pm -
Nonstop6h 33m
Thu 1/711:05 am -
1 stop10h 15m
Deal found 8/13![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 8/13. 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 11/276:30 pm -
1 stop8h 15m
Tue 12/17:45 pm -
2 stops9h 35m
Deal found 8/13![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 8/13. 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 11/265:25 am -
1 stop8h 35m
Tue 12/17:45 pm -
2 stops9h 35m
Deal found 8/13![Southwest logo]()
$317
Last-minute flights from Boston to San DiegoDiscover last-minute flight deals from Boston to San Diego. Data last updated August 14, 2026 and is based on user searches.
Discover last-minute flight deals from Boston to San Diego. Data last updated August 14, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 8/11. 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.
Wed 9/25:45 pm -
1 stop9h 02m
Sun 9/69:10 pm -
1 stop10h 25m
Deal found 8/11![American Airlines logo]()
$261
This United Airlines deal was found by Cheapflights users on 8/10. 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 9/211:55 am -
1 stop8h 05m
Fri 9/42:15 pm -
1 stop7h 56m
Deal found 8/10![United Airlines logo]()
$263
This United Airlines deal was found by Cheapflights users on 8/11. 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 9/411:50 am -
1 stop8h 36m
Sat 9/122:15 pm -
1 stop7h 55m
Deal found 8/11![United Airlines logo]()
$256
This Super.com deal was found by Cheapflights users on 8/9. 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.
Fri 9/43:50 pm -
Nonstop6h 06m
Tue 9/88:17 pm -
Nonstop5h 43m
Deal found 8/9![JetBlue logo]()
$259
This Delta deal was found by Cheapflights users on 8/11. 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 9/45:20 pm -
Nonstop6h 15m
Fri 9/1110:04 pm -
Nonstop5h 36m
Deal found 8/11![Delta logo]()
$264
This Southwest deal was found by Cheapflights users on 8/10. 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 9/58:40 am -
2 stops11h 30m
Sun 9/610:40 pm -
1 stop7h 20m
Deal found 8/10![Southwest logo]()
$260
This Southwest deal was found by Cheapflights users on 8/9. 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 9/58:40 am -
2 stops11h 30m
Sat 9/123:55 pm -
Nonstop5h 35m
Deal found 8/9![Southwest logo]()
$262
This Delta deal was found by Cheapflights users on 8/12. 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 9/86:55 am -
1 stop8h 30m
Mon 9/1410:04 pm -
Nonstop5h 36m
Deal found 8/12![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 8/12. 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 9/113:55 pm -
1 stop10h 05m
Sun 9/133:55 pm -
Nonstop5h 35m
Deal found 8/12![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 8/9. 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 9/128:40 am -
2 stops11h 30m
Sat 9/193:55 pm -
Nonstop5h 35m
Deal found 8/9![Southwest logo]()
$252
This Super.com deal was found by Cheapflights users on 8/9. 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.
Tue 9/299:30 am -
Nonstop6h 04m
Wed 10/78:25 pm -
Nonstop6h 06m
Deal found 8/9![JetBlue logo]()
$255
This Super.com deal was found by Cheapflights users on 8/10. 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.
Wed 9/304:00 pm -
Nonstop6h 07m
Fri 10/98:40 pm -
Nonstop5h 44m
Deal found 8/10![JetBlue logo]()
$254
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 August 14, 2026.
Search for one-way flight options from Boston to San Diego. Find affordable one-way fares based on user searches. Data last updated August 14, 2026.
This Super.com deal was found by Cheapflights users on 8/9. 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.
Mon 11/26:30 am -
Nonstop6h 35m
Deal found 8/9![JetBlue logo]()
$136
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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.
Fri 10/166:35 am -
Nonstop6h 17m
Deal found 8/10![JetBlue logo]()
$137
This United Airlines deal was found by Cheapflights users on 8/10. 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.
Thu 1/146:00 am -
1 stop8h 22m
Deal found 8/10![United Airlines logo]()
$138
This JetBlue deal was found by Cheapflights users on 8/12. 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 11/126:30 am -
Nonstop6h 35m
Deal found 8/12![JetBlue logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Sat 9/2612:54 pm -
2 stops30h 05m
Deal found 8/10![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Wed 8/1912:45 pm -
2 stops29h 05m
Deal found 8/12![Frontier logo]()
$142
This Expedia deal was found by Cheapflights users on 8/9. 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.
Sun 9/208:00 am -
Nonstop6h 12m
Deal found 8/9![Alaska Airlines logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 8/10. 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.
Sun 11/812:35 pm -
2 stops30h 06m
Deal found 8/10![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Fri 9/412:45 pm -
2 stops38h 06m
Deal found 8/11![Frontier logo]()
$145
This United Airlines deal was found by Cheapflights users on 8/12. 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 9/42:28 pm -
1 stop9h 01m
Deal found 8/12![United Airlines logo]()
$146
This Cheapflightsfares deal was found by Cheapflights users on 8/10. 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.
Fri 8/284:20 pm -
Nonstop6h 09m
Deal found 8/10![JetBlue logo]()
$147
This Kiwi.com deal was found by Cheapflights users on 8/11. 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.
Fri 8/2112:45 pm -
2 stops29h 05m
Deal found 8/11![Frontier logo]()
$148
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 August 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $252 (Southwest) |
One-way from | $136 (Super.com) |
Popular in | December |
Cheapest in | January |
Average price | $378 |
Good round-trip deal | $300 or less |
Good one-way deal | $200 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 August 14, 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
Quickest round-trip
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Fri 9/25
5:10 pm-8:15 pm
Nonstop6h 05m
San Diego
Mon 9/28
10:04 pm-6:40 am
Nonstop5h 36m
$267
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Sat 9/5
8:40 am-5:10 pm
2 stops11h 30m
San Diego
Wed 9/9
10:40 pm-9:00 am
1 stop7h 20m
$272
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Thu 10/1
6:05 pm-12:30 am
1 stop9h 25m
San Diego
Sun 10/4
3:00 pm-11:30 pm
Nonstop5h 30m
$283
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Fri 9/4
4:30 pm-10:55 pm
1 stop9h 25m
San Diego
Sun 9/13
10:04 pm-6:40 am
Nonstop5h 36m
$294
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Wed 9/23
5:10 pm-8:15 pm
Nonstop6h 05m
San Diego
Tue 9/29
10:04 pm-6:40 am
Nonstop5h 36m
$295
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Tue 9/8
2:30 pm-8:50 pm
1 stop9h 20m
San Diego
Thu 9/10
3:55 pm-12:30 am
Nonstop5h 35m
$301
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Thu 12/31
5:15 pm-8:48 pm
Nonstop6h 33m
San Diego
Thu 1/7
11:05 am-12:20 am
1 stop10h 15m
$315
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Thu 9/3
11:50 am-5:26 pm
1 stop8h 36m
San Diego
Tue 9/8
10:30 pm-9:33 am
1 stop8h 03m
$317
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Tue 10/27
7:51 am-11:09 am
Nonstop6h 18m
San Diego
Sun 11/8
6:16 am-11:58 pm
1 stop14h 42m
$317
BostonSan Diego
BOS Boston Logan Intl - SAN San Diego
BOSSAN
Boston Logan Intl
Fri 11/27
6:30 pm-11:45 pm
1 stop8h 15m
San Diego
Tue 12/1
7:45 pm-8:20 am
2 stops9h 35m
$317
Showing 1-10 of 21 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 August.
| 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 |
- 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 52 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 $323). Flying from Boston to San Diego in December is currently the most expensive (average of $472). 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 August 14, 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 16% of weekly flights between Boston and San Diego have experienced delays in the past year, with the average delay time being 157 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?
Monday 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 13% 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 August 14, 2026.
Get a feel of what it's like to fly with Southwest,Alaska Airlines, 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.
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
Boarding
8.1
Overall
8.0
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWalter,May 2026
LAS - BUR
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
San Ysidro
La Mesa
Santee
Julian
Lemon Grove
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Boston and San Diego flights
Browse other Boston and San Diego flight options. Last updated on August 14, 2026.
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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 August 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$118 | Average$362 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$131 | Average$356 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$173 | Average$365 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$197 | Average$407 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$236 | Average$393 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$241 | Average$468 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$257 | Average$395 | FlexibilityNo cancel fee | On-time63% |