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Boston to Miami flights in December 2026 from $98 BOS → MIA

Logan International Airport (BOS) → Miami International Airport (MIA)

For departures in December 2026, the cheapest return found recently is $294 with American Airlines, 4 Dec – 6 Dec, found 2 days ago. The cheapest one-way found recently is $98 with Southwest Airlines, 5 Dec, found yesterday.

Return

We hold return fares on only 2 departure dates in December 2026, too few to say what one usually costs.

Cheapest return found recently

$294

4 Dec – 6 Dec · American Airlines

Logan International Airport (BOS) → Miami International Airport (MIA)

out nonstop, back 1 stop

found 2 days ago

See prices for these datesCheck today's price

Cheapest we hold, of any age

$258

11 Dec – 13 Dec · American Airlines

Logan International Airport (BOS) → Miami International Airport (MIA)

out nonstop, back nonstop

found 6 days ago

See prices for these datesCheck today's price

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
11 Dec – 13 Dec$258American Airlinesout nonstop, back nonstopfound 6 days agoSee prices for these dates
4 Dec – 6 Dec$294American Airlinesout nonstop, back 1 stopfound 2 days agoSee prices for these dates

Every date we hold

2 departure dates

4 Dec – 6 Dec: $294, found 2 days ago11 Dec – 13 Dec: $258, found 6 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
4 Dec – 6 Dec$294American AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)out nonstop, back 1 stopfound 2 days agoSee prices for these dates
11 Dec – 13 Dec$258American AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)out nonstop, back nonstopfound 6 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $258.

November 2026From $3341 departure date16 Nov – 20 Nov · found 4 days agoSee prices for these dates
December 2026From $258Cheapest seen2 departure dates11 Dec – 13 Dec · found 6 days agoSee prices for these dates
May 2027From $4051 departure date8 May 2027 – 15 May 2027 · found 2 days agoSee prices for these dates

One-way

In December 2026, the cheapest one-way fare on each of 8 departure dates is usually $135 to $219. Across all 14 departure dates we hold on this route, it is usually $145 to $220.

Cheapest one-way found recently

$98

5 Dec · Southwest Airlines

Logan International Airport (BOS) → Miami International Airport (MIA)

1 stop

found yesterday

Open this tripCheck today's price

It is also the cheapest one-way we hold, of any age.

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The cheapest dates in December 2026

DatesFromAirlineStopsFound
5 Dec$98Southwest Airlines1 stopfound yesterdayOpen this trip
9 Dec$105American Airlinesnonstopfound 4 days agoOpen this trip
7 Dec$145American Airlinesnonstopfound 3 days agoOpen this trip
6 Dec$145American Airlinesnonstopfound 3 days agoOpen this trip
31 Dec$172Frontier Airlines1 stopfound 5 days agoOpen this trip

Every date we hold

8 departure dates

5 Dec: $98, found yesterday6 Dec: $145, found 3 days ago7 Dec: $145, found 3 days ago9 Dec: $105, found 4 days ago22 Dec: $200, found 5 days ago23 Dec: $277, found 5 days ago26 Dec: $324, found 5 days ago31 Dec: $172, found 5 days agoDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
5 Dec$98Southwest AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)1 stopfound yesterdayOpen this trip
6 Dec$145American AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)nonstopfound 3 days agoOpen this trip
7 Dec$145American AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)nonstopfound 3 days agoOpen this trip
9 Dec$105American AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)nonstopfound 4 days agoOpen this trip
22 Dec$200Southwest AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)1 stopfound 5 days agoOpen this trip
23 Dec$277Southwest AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)2 stopsfound 5 days agoOpen this trip
26 Dec$324jetBlueLogan International Airport (BOS) → Miami International Airport (MIA)1 stopfound 5 days agoOpen this trip
31 Dec$172Frontier AirlinesLogan International Airport (BOS) → Miami International Airport (MIA)1 stopfound 5 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $98.

November 2026From $1682 departure dates26 Nov · found 7 days agoOpen this trip
December 2026From $98Cheapest seen8 departure dates5 Dec · found yesterdayOpen this trip
February 2027From $1011 departure date2 Feb 2027 · found 2 days agoOpen this trip
March 2027From $2131 departure date7 Mar 2027 · found 2 days agoOpen this trip
May 2027From $2331 departure date5 May 2027 · found 7 days agoOpen this trip
June 2027From $2221 departure date17 Jun 2027 · found 4 days agoOpen this trip

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work