All deals

Cheap Flights from Boston to San Diego

Every verified deal from Boston to San Diego, ranked by how far the fare falls below its route baseline. Prices are checked against live availability.

Boston → San Diego

$267 $0.05/mi

Alaska · Economy · Oct 22 – Oct 28 (6n)

On the board right now

Cabin mix: 1 Economy.
Best discount right now: 52% below the route baseline.
Most active airlines: Alaska.

Price history: Boston to San Diego

Lowest observed fare on this corridor over the past year, from our signals database.

$207 — seen Jul 2026
$197 — seen Jul 2026
$197 — seen Jul 2026
$197 — seen Aug 2026
$197 — seen Aug 2026
$237 — seen Aug 2026
$257 — seen Aug 2026
$237 — seen Aug 2026
$237 — seen Aug 2026 (2 observations)
$237 — seen Aug 2026
$216 — seen Aug 2026 (14 observations)
$280 — seen Aug 2026 (2 observations)
$288 — seen Aug 2026 (6 observations)
$493 — seen Aug 2026 (7 observations)
$290 — seen Aug 2026
$207 — seen Aug 2026
$207 — seen Aug 2026
$493 — seen Aug 2026 (5 observations)
$237 — seen Aug 2026 (2 observations)
$237 — seen Aug 2026 (2 observations)
$292 — seen Aug 2026 (3 observations)
$278 — seen Aug 2026
$277 — seen Aug 2026
$257 — seen Aug 2026 (5 observations)
$267 — seen Aug 2026
$267 — seen Aug 2026
$297 — seen Aug 2026 (2 observations)
$257 — seen Aug 2026 (2 observations)
$277 — seen Aug 2026
$297 — seen Aug 2026
$237 — seen Aug 2026
$231 — seen Aug 2026 (4 observations)
$231 — seen Aug 2026 (3 observations)
$253 — seen Aug 2026 (2 observations)
$277 — seen Aug 2026 (2 observations)
$212 — seen Aug 2026
$231 — seen Aug 2026
$253 — seen Aug 2026 (4 observations)
$212 — seen Aug 2026
$268 — seen Aug 2026
$311 — seen Aug 2026
$321 — seen Aug 2026 (2 observations)
$245 — seen Aug 2026
$231 — seen Aug 2026
$231 — seen Aug 2026
$237 — seen Aug 2026
$237 — seen Aug 2026
$237 — seen Aug 2026
$237 — seen Aug 2026
$247 — seen Aug 2026 (2 observations)
$248 — seen Aug 2026 (2 observations)
$237 — seen Aug 2026
$237 — seen Aug 2026
$237 — seen Aug 2026 (2 observations)
$237 — seen Aug 2026 (2 observations)
$294 — seen Aug 2026 (3 observations)
$277 — seen Aug 2026
$257 — seen Aug 2026
$257 — seen Aug 2026
$294 — seen Aug 2026 (4 observations)
$294 — seen Aug 2026 (7 observations)
$257 — seen Aug 2026
$257 — seen Aug 2026
$257 — seen Aug 2026
$257 — seen Aug 2026
$294 — seen Sep 2026 (4 observations)
$268 — seen Sep 2026
$268 — seen Sep 2026
$277 — seen Sep 2026
$277 — seen Sep 2026
$257 — seen Sep 2026
$257 — seen Sep 2026
$258 — seen Sep 2026
$246 — seen Sep 2026
$237 — seen Sep 2026
$195 — seen Sep 2026
$224 — seen Sep 2026
$257 — seen Sep 2026
$257 — seen Sep 2026
$257 — seen Sep 2026

Frequently asked questions

How many flight deals from Boston to San Diego are on Sparkflights right now?

There are 1 verified deals from Boston to San Diego on the board right now. The list refreshes hourly.

What is the cheapest flight from Boston to San Diego right now?

The lowest verified fare from Boston to San Diego right now is $267. Prices are checked against live availability before listing.

What is the lowest price ever seen from Boston to San Diego?

The lowest fare we've recorded from Boston to San Diego is $195, based on 80 price observations over the past year.

Which airlines fly Boston to San Diego?

Airlines with the most deals from Boston to San Diego right now are Alaska.