Cheap flights from San Diego to Boston
Cheap return flights from San Diego to Boston
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Boston flight facts
What you need to know
What are the cheapest airlines?
- Spirit Airlines
- JetBlue Airways
- Allegiant Air
These airlines usually offer the cheapest flights from San Diego to Boston.
What airlines fly indirectly?
- American Airlines
- Delta Air Lines
- United Airlines
These airlines fly from San Diego to Boston, but you’ll have at least one layover.
How long is the flight?
6 hours 30 minutes
This is the shortest flight time from San Diego to Boston.
Alternative flights from the UK to Boston
Check out prices for other routes
Alternative flights from San Diego
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the San Diego/Boston route. There are around 35 flights on any given week from the UK to Boston and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from San Diego to Boston
Tips and advice from our flight experts
You've searched for flights from San Diego to Boston. We've found 25 flights and compared them to give you the best offers. Spirit Airlines is the average cheapest for this route, so look out for them. The cheapest offer we've found is a one-way ticket for £54 from San Diego to Boston on 15/03/2026 at 17:45.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 10 airlines that operate the 4,000 km flight from San Diego to Boston.
To find the best offers, consider booking 2-3 months in advance or last minute. Look for Spirit Airlines for budget options. The average flight duration is about 6 hours 30 minutes. After selecting an offer, fill out your information and payment. Consider booking a hotel with us or using our flight + hotel service to save time and money.
Other popular destinations near Boston
Where other people are flying to
