Chicago to Baltimore in September 2026

Dated one-way fares from Chicago to Baltimore in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $35

Highest this month $143

Sample fare $35

Airports ORD–BWI

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September 2026 price calendar

From $35 · up to $143

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $143 2 $141 3 $138 4 $86 5 $86 6 $86 7 $86 8 $86 9 $86 10 $35 11 $54 12 $54 13 $54 14 $73 15 $79

Baltimore BWI

$35

Sep 10, 6:20am · 2h 5m · 0 stops

ORD → BWI · Frontier Airlines

Baltimore BWI

$73

Sep 14, 10:26am · 5h 20m · 1 stop

ORD → BWI · Frontier Airlines

Baltimore BWI

$79

Sep 15, 6:20am · 9h 26m · 1 stop

ORD → BWI · Frontier Airlines

This page is only September 2026 on the Chicago to Baltimore route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book Chicago to Baltimore in September 2026.