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Baltimore to Chicago in March 2027 BWI → MDW, ORD, RFD

Baltimore/Wash International Thurgood Marshall Airport (BWI) → Chicago Midway International Airport (MDW), O'Hare International Airport (ORD), Chicago Rockford International Airport (RFD)

For departures in March 2027, the cheapest return found recently is $305 with Frontier Airlines, 25 Mar 2027 – 28 Mar 2027, found 3 days ago.

Return

In March 2027, the cheapest return fare on each of 8 departure dates is usually $358 to $378. Across all 17 departure dates we hold on this route, it is usually $289 to $368. Of the 3 months with enough return fares to compare, March 2027 is usually the most expensive.

Cheapest return found recently

$305

25 Mar 2027 – 28 Mar 2027 · Frontier Airlines

Baltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)

out nonstop, back nonstop

found 3 days ago

See prices for these datesCheck today's price

It is also the cheapest return we hold, of any age.

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The cheapest dates in March 2027

DatesFromAirlineStopsFound
25 Mar 2027 – 28 Mar 2027$305Frontier Airlinesout nonstop, back nonstopfound 3 days agoSee prices for these dates
18 Mar 2027 – 23 Mar 2027$340Frontier Airlinesout nonstop, back nonstopfound 3 days agoSee prices for these dates
22 Mar 2027 – 25 Mar 2027$364Frontier Airlinesout 1 stop, back nonstopfound 3 days agoSee prices for these dates
20 Mar 2027 – 25 Mar 2027$366Frontier Airlinesout 1 stop, back nonstopfound 3 days agoSee prices for these dates
23 Mar 2027 – 28 Mar 2027$368Frontier Airlinesout 1 stop, back nonstopfound 3 days agoSee prices for these dates

Every date we hold

8 departure dates

18 Mar 2027 – 23 Mar 2027: $340, found 3 days ago19 Mar 2027 – 23 Mar 2027: $429, found 3 days ago20 Mar 2027 – 25 Mar 2027: $366, found 3 days ago21 Mar 2027 – 24 Mar 2027: $374, found 3 days ago22 Mar 2027 – 25 Mar 2027: $364, found 3 days ago23 Mar 2027 – 28 Mar 2027: $368, found 3 days ago24 Mar 2027 – 29 Mar 2027: $389, found 3 days ago25 Mar 2027 – 28 Mar 2027: $305, found 3 days agoMar
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
18 Mar 2027 – 23 Mar 2027$340Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out nonstop, back nonstopfound 3 days agoSee prices for these dates
19 Mar 2027 – 23 Mar 2027$429United AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out nonstop, back nonstopfound 3 days agoSee prices for these dates
20 Mar 2027 – 25 Mar 2027$366Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out 1 stop, back nonstopfound 3 days agoSee prices for these dates
21 Mar 2027 – 24 Mar 2027$374Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out nonstop, back nonstopfound 3 days agoSee prices for these dates
22 Mar 2027 – 25 Mar 2027$364Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out 1 stop, back nonstopfound 3 days agoSee prices for these dates
23 Mar 2027 – 28 Mar 2027$368Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out 1 stop, back nonstopfound 3 days agoSee prices for these dates
24 Mar 2027 – 29 Mar 2027$389United AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out nonstop, back nonstopfound 3 days agoSee prices for these dates
25 Mar 2027 – 28 Mar 2027$305Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → O'Hare International Airport (ORD)out nonstop, back nonstopfound 3 days agoSee prices for these dates

Which month looks cheapest?

December 2026 is the cheapest month — from $175.

October 2026From $2633 departure dates31 Oct – 3 Nov · found 6 days agoSee prices for these dates
November 2026From $2315 departure dates1 Nov – 2 Nov · found 6 days agoSee prices for these dates
December 2026From $175Cheapest seen1 departure date8 Dec – 13 Dec · found 4 days agoSee prices for these dates
March 2027From $3058 departure dates25 Mar 2027 – 28 Mar 2027 · found 3 days agoSee prices for these dates

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