Featured deal
Boston to San Diego
- Dec 5–12, 2026 · +3 more dates
- 7 nights
JetBlue- Economy
$179 USD
View deal Round trip
Cheap Flights from Boston to San Diego
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Latest economy price we saw: Boston to San Diego
The most recent economy round-trip fare we saw on this route.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Boston (BOS) to San Diego (SAN) | $335 | 6.5¢ | Jan 24 – Jan 31 | Alaska | Nov 5 | Check price |
Economy price history: Boston to San Diego
The lowest fares we saw each month.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Nov 2026 | $137 | $233 | 52 |
| Oct 2026 | $116 | $213 | 197 |
| Sep 2026 | $195 | $310 | 63 |
| Aug 2026 | $197 | $260 | 128 |
| Jul 2026 | $197 | $200 | 3 |
Every deal from Boston to San Diego, ranked by cost per mile.
On the board right now
- Cabin mix: 1 Economy.
- Most active airlines: JetBlue.
Frequently asked questions
How many flight deals from Boston to San Diego are on Sparkflights right now?
There are 1 deals from Boston to San Diego on the board right now.
What is the cheapest flight from Boston to San Diego right now?
The lowest fare from Boston to San Diego right now is $179 in Economy.
What is the lowest price ever seen from Boston to San Diego?
The lowest economy fare we've recorded from Boston to San Diego is $116, based on 443 price observations over 5 months.
How much does a flight from Boston to San Diego cost?
The typical round-trip economy fare we observed from Boston to San Diego is $243, against a recorded low of $116. These are observations, not quotes.
When is the cheapest month to fly Boston to San Diego?
For economy fares from Boston to San Diego, October was the cheapest month we observed and July the dearest, over 5 months of data.
What is the current price from Boston to San Diego?
The most recent economy fare we saw from Boston to San Diego is $335, on Nov 5.
Which airlines fly Boston to San Diego?
Airlines with the most deals from Boston to San Diego right now are JetBlue.