Cheapest€315.79
- Alaska Airlines AA782706:306h 24m15:54San Diego SANBoston BOS
Door to door 9h 34mCO2 632.7 kgChanges 0Fixed, no changes
San Diego to Boston flight
Flights from San Diego to Boston start at €315.79 and take 9h 2m at their fastest.
Check dates and fares
Fares and seats move by the day. Price San Diego to Boston on the date you actually want, rather than on the date this page was built.
The Flights from San Diego to Boston starts at €315.79 and takes 9h 2m door to door, run by 3 operators over 4,275 km, with around 13 departures a day. Fares bottom out about 60 days before departure.
- 9h 2mDoor to door
- 5h 52mMoving
- €400.16 to €875.70From
- 06:23 to 17:32First and last departure
- 13Per day
- 632.7 kgCO2
First and last are taken from the services we sell on 6 October 2026. The return direction keeps its own timetable and is not these times reversed.
€400.16 to €875.70 for one passenger across the 14 departure dates priced here. The low end is one day, not every day. Worked out from this corridor rather than held for anybody. The operator sets the price on the day.
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €875.70Fri18
- about €786.61Sat19
- about €747.08Sun20
- about €508.13Mon21
- about €576.57Tue22
- about €522.88Wed23
- about €673.92Thu24
- about €504.59Fri25
- about €574.21Sat26
- about €479.81Sun27
- about €442.64Mon28
- about €400.16Tue29
- about €475.68Wed30
- about €516.39Thu1
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The cheapest and the fastest on 6 October 2026
Fastest€331.72
- Southwest Airlines SA849811:305h 52m20:22San Diego SANBoston BOS
Door to door 9h 2mCO2 632.7 kgChanges 0Fixed, no changes
Airlines
| Operator | From | Fastest |
|---|---|---|
 Alaska Airlines | €315.79 | 8h 57m |
 JetBlue Airways | €320.51 | 8h 56m |
 Southwest Airlines | €331.72 | 8h 59m |
The flight gets you into Boston. It does not get you a bed, and neither do we.
A room in Boston for the night the flight gets in
Sort by distance from Boston South Station and you can see which places are ten minutes on foot and which are not.
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When to book San Diego to Boston
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €352.3790 days
- €276.2660 days
- €308.1245 days
- €352.3730 days
- €421.9921 days
- €516.3914 days
- €673.927 days
- €747.083 days
- €875.701 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €276.26.
- How much it moves
- The gap between the cheapest and dearest lead time is 217 percent. The dearest point is €875.70, 1 days out.
- What that means
- Today sits inside the cheap window, which closes about 60 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Which departure day costs least
Median cheapest fare for each weekday, taken across the next three weeks of real prices.
- €479.81Sun
- €442.64Mon
- €400.16Tue
- €475.68Wed
- €516.39Thu
- €504.59Fri
- €574.21Sat
Where you leave from and where you arrive
San Diego
Air
- SAN
Boston
Air
- BOS
- BED
What the journey looks like
- Direct or connecting
- 69% of the services we sell on this corridor run through without a change. The remaining 31% involve one connection.
- How far it really runs
- The route covers 4,275 km against 4,150 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Des Moines, Kansas City, Detroit, Chicago. The gap between arriving and leaving is 50 minutes, of which about 5 is walking.
- If the connection is missed
- The tightest connection we sell here has a 19 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
- First and last departure
- The first service of the day leaves San Diego at 06:23 and the last at 17:32, across 13 departures The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about San Diego to Boston
The questions people actually ask about this journey, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does the Flight from San Diego to Boston take?
The Flight from San Diego to Boston takes 9h 2m door to door, of which 5h 52m is spent moving. The route runs 4,275 km. The difference between the two times is reaching the terminal and leaving it at the far end, which every time on this page includes.
How much does the Flight from San Diego to Boston cost?
The Flight from San Diego to Boston starts at €315.79 for one passenger, as of 17 September 2026. A typical fare is €386.59. Both are the total including taxes, supplier fees and our service fee, so the price here is the price at checkout.
Who runs the Flight from San Diego to Boston?
3 operators run the Flight from San Diego to Boston: Alaska Airlines, JetBlue Airways, Southwest Airlines. Between them they file around 13 departures a day. The operator table on this page compares them on fare, journey time, cruising speed, fare conditions and what is provided on board.
Which terminal does the Flight from San Diego to Boston use?
The Flight from San Diego to Boston leaves from San Diego SAN and arrives at Boston BOS. Allow about 3h 10m for reaching the departure terminal and leaving the arrival one. That time is already inside every door to door figure quoted on this page.
When should I book the Flight from San Diego to Boston?
Fares for the Flight from San Diego to Boston bottom out around 60 days ahead, at €276.26. The gap between the cheapest and dearest lead time across the window is 217 percent, measured on 17 September 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from San Diego to Boston produce?
The Flight from San Diego to Boston produces about 632.7 kg of CO2 per passenger over 4275 km, which works out at roughly 148 grams per passenger kilometre. That figure is for the whole journey and for one traveller, not for the vehicle.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Derived from service area No carrier record names this exact pair. The operators listed publish a service area covering both places at a distance their mode plausibly carries people, which is evidence that the corridor is served and not evidence of a specific service. Pages state which, because presenting the two as the same thing would be dishonest.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for San Diego to Boston on 17 September 2026: 4275 km of route against 4150 km in a straight line, 13 services a day, 3 operators a cheapest fare of €315.79, and 9h 2m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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