Cheapest€118.73
- Frontier Airlines FA691906:152h 24m08:39Boston BEDMilwaukee MKE
Door to door 5h 34mCO2 348.8 kgChanges 0Fixed, no changes
Boston to Milwaukee flight
Flights from Boston to Milwaukee start at €136.43 and take 5h 22m at their fastest.
The Flights from Boston to Milwaukee starts at €136.43 and takes 5h 22m door to door, run by 2 operators over 1,418 km, with around 12 departures a day. Fares bottom out about 60 days before departure.
- 5h 22mDoor to door
- 2h 12mMoving
- €136.43From
- 348.8 kgCO2
The cheapest and the fastest on September 28, 2026
Two journeys we can sell today, with the service number each operator files them under.
Fastest€149.41
- Frontier Airlines FA546918:282h 12m20:40Boston BOSMilwaukee MKE
Door to door 5h 22mCO2 348.8 kgChanges 0Fixed, no changes
Lowest CO2€152.95
- Allegiant Air AA661807:302h 2m09:32Boston BOSGrand Rapids GRR
- PARTA PA571010:192h 54m13:13Rapid Central StationFirst Student
Changes at Grand Rapids, with 47 minutes between services and a walk of about 14 minutes.
Door to door 7h 40mCO2 308.5 kgChanges 1Fixed, no changes
Airlines
Speed, flexibility and what is on board. Nothing here is a rating, because we have not earned one.
| Operator | From |
|---|---|
 Frontier Airlines | €118.73 |
 Republic Airways | €125.81 |
That is the traveling done. What happens after you walk out into Milwaukee is not something we sell.
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When to book Boston to Milwaukee
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €152.3690 days
- €95.7260 days
- €97.4945 days
- €111.6530 days
- €135.2521 days
- €144.1014 days
- €173.607 days
- €171.833 days
- €273.311 days
- Cheapest lead time
- Fares bottom out around 60 days ahead, at €95.72.
- How much it moves
- The gap between the cheapest and most expensive lead time is 186 percent. The most expensive point is €273.31, 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.
- €159.44Sun
- €139.97Mon
- €136.43Tue
- €150.00Wed
- €183.04Thu
- €144.10Fri
- €176.55Sat
Where you leave from and where you arrive
The stations, airports and ports each mode on this corridor actually uses.
Boston
Air
- BOS
- BED
Milwaukee
Air
- MKE
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 67% of the services we sell on this corridor run through without a change. The remaining 33% involve one connection.
- How far it really runs
- The route covers 1,418 km against 1,376 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 Grand Rapids, Toronto, Cleveland, Detroit. The gap between arriving and leaving is 47 minutes, of which about 14 is walking.
- If the connection is missed
- The tightest connection we sell here has a 20 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 Boston at 06:08 and the last at 18:28, across 12 departures. The return direction keeps its own timetable, so the times back are not these times reversed.
Questions about Boston to Milwaukee
The questions people actually ask about this trip, 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 Boston to Milwaukee take?
The Flight from Boston to Milwaukee takes 5h 22m door to door, of which 2h 12m is spent moving. The route runs 1,418 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 Boston to Milwaukee cost?
The Flight from Boston to Milwaukee starts at €136.43 for one passenger, checked on September 28, 2026. A typical fare is €134.96. 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 Boston to Milwaukee?
2 operators run the Flight from Boston to Milwaukee: Frontier Airlines, Republic Airways. Between them they file around 12 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 Boston to Milwaukee use?
The Flight from Boston to Milwaukee leaves from Boston BOS and arrives at Milwaukee MKE. 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 Boston to Milwaukee?
Fares for the Flight from Boston to Milwaukee bottom out around 60 days ahead, at €95.72. The gap between the cheapest and most expensive lead time across the window is 186 percent, measured on September 28, 2026. Booking inside the final week has consistently cost more.
How much CO2 does the Flight from Boston to Milwaukee produce?
The Flight from Boston to Milwaukee produces about 348.8 kg of CO2 per passenger over 1418 km, which works out at roughly 246 grams per passenger kilometer. That figure is for the whole journey and for one traveler, not for the vehicle.
Where these numbers come from
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Schedules, seat counts and fares are generated by our own model until the supplier contracts are signed. Places, coordinates, operators, which operator serves which pair, and every distance are real. We would rather say that on every page than let a modeled number pass for a filed one.
Defined in full at Door to door, Fares, The booking window, Carbon
- On this page
- Every figure above was computed for Boston to Milwaukee on September 11, 2026: 1418 km of route against 1376 km in a straight line, 12 services a day, 2 operators, a cheapest fare of €136.43, and 5h 22m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
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