Portland to Boston: buy now or wait?
Buy now FareScore 85/100
usually $352 $314 ≈ €279 Today's best fare
Cheaper than 85% of what we have seen
12 Nov United Airlines With a stop
Cheapest in October (~$212)
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All fares Portland → Boston
Cheapest first. Every price is live and goes straight to booking.
What the history says
Prices recorded 29
Typical price €312
Lowest we saw €279
You save today €33
Based on 29 prices we recorded on this exact route, compared against the same departure month.
Best booking window
0–13 days — is when this route has been cheapest to book: €279 typical, on 24 observations.
Cheapest months to fly to Boston
October €188 12 observations
November €312 13 observations
Booking tips from our fare data
- How far in advance should you book a flight?
- Book 1–1.5 months before departure. Tracking the same flights at every lead time (92,167 flights on 19,004 routes, 2026-06-14 to 2026-11-03), that window had the smallest average premium over each flight's lowest fare: +16.8%, against +49.3% in the last 3 days.
- What is the cheapest day of the week to fly?
- Wednesday. Comparing each fare with the median of its own route, Wednesday departures were +3.3% and Tuesday +4.1%, while Friday was the dearest at +10.5%. Weekend departures cost more than midweek ones.
- What is the cheapest month to fly?
- November 2026. Comparing each route's fares month by month (booked 8–60 days ahead), November 2026 departures were -1.1% against the route's own median, while September 2026 was the dearest at +6.2%. Covers September 2026, October 2026, November 2026, December 2026; fares observed 2026-06-14 to 2026-11-03.
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