฿9,045 Cheap United flights from Boston to San Diego (BOS→SAN)

View ฿9,045 flight on Sat, 22 Nov 2025Opens in a new window

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

United flights from Boston to San Diego (BOS→SAN)

Prices were available within the past 7 days and start at ฿9,045 for one-way flights and ฿25,585 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, 22 Nov - Sat, 29 Nov
BOS
Boston
SAN
San Diego
฿25,585 Return, found 6 days ago
฿25,585
Return
found 6 days ago
Select United flight, departing Sat, 22 Nov from Boston to San Diego, returning Sat, 29 Nov, priced at ฿25,585 found 6 days ago
United
Sat, 22 Nov - Sat, 29 Nov
BOS
Boston
SAN
San Diego
฿26,545 Return, found 6 days ago
฿26,545
Return
found 6 days ago
Select United flight, departing Sat, 22 Nov from Boston to San Diego, returning Sat, 29 Nov, priced at ฿26,545 found 6 days ago
United
Sat, 22 Nov - Sat, 29 Nov
BOS
Boston
SAN
San Diego
฿26,700 Return, found 6 days ago
฿26,700
Return
found 6 days ago
Select United flight, departing Sat, 22 Nov from Boston to San Diego, returning Sat, 29 Nov, priced at ฿26,700 found 6 days ago
United
Sat, 22 Nov - Sat, 29 Nov
BOS
Boston
SAN
San Diego
฿27,180 Return, found 6 days ago
฿27,180
Return
found 6 days ago
Select United flight, departing Sat, 22 Nov from Boston to San Diego, returning Sat, 29 Nov, priced at ฿27,180 found 6 days ago
United
Sat, 22 Nov - Sat, 29 Nov
BOS
Boston
SAN
San Diego
฿27,335 Return, found 6 days ago
฿27,335
Return
found 6 days ago
Select United flight, departing Sat, 22 Nov from Boston to San Diego, returning Sat, 29 Nov, priced at ฿27,335 found 6 days ago
United
Sat, 22 Nov - Sat, 29 Nov
BOS
Boston
SAN
San Diego
฿27,370 Return, found 6 days ago
฿27,370
Return
found 6 days ago
Select United flight, departing Sat, 22 Nov from Boston to San Diego, returning Sat, 29 Nov, priced at ฿27,370 found 6 days ago

Frequently asked questions

How much is a United Airlines flight from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN)?
Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from ฿25,585 from BOS to SAN. Affordable one-way tickets from ฿9,045 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from BOS to SAN with United Airlines?
January is one of the least expensive months to get away to San Diego with United Airlines. You could also find fantastic deals on one-way and round-trip fares in November.
Does United Airlines fly nonstop from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN)?
Fill in your dates, press search and check the "Nonstop" filter on Expedia to browse any direct flights from BOS to SAN with United Airlines or other airlines.
What airports does United Airlines fly into in San Diego?
Catch a United Airlines flight from Logan Intl. Airport (BOS) to San Diego, and you'll likely arrive at San Diego Intl. Airport (SAN). This is the airline's main hub in this destination.
Can I change or cancel my United Airlines flight from Logan Intl. Airport (BOS) to San Diego Intl. Airport (SAN)?
Depending on the ticket type you purchased, a fee generally applies if you change or cancel your flight more than 24 hours after it has been confirmed. To find flexible fares, select our "Changes included" and "No cancel fee" boxes when searching for flights. For additional information on cancelling or modifying your reservation, head to "Trips," select your flight and tick "Manage Booking."

Travel information

Travel information

Origin airport
Logan Intl.
Destination airport
San Diego Intl.
Distance
4131 km
Average flight time
4 hours 18 mins

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to Expedia members.