LGA (New York) to Washington in September 2026

Dated one-way fares from LGA (New York) to Washington in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $86

Highest this month $157

Sample fare $79

Airports LGA–DCA

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September 2026 price calendar

From $86 · up to $157

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1 $114 2 $86 3 $130 4 $130 5 $123 6 $116 7 $113 8 $113 9 $110 10 $91 11 $120 12 $100 13 $129 14 $157 15 $139 16 $139 17 $120 18 $123 19 $123 20 $126 21 $118 22 $111 23 $111 24 $111 25 $105 26 $100 27 $107 28 $114

Washington WAS

$86

Sep 02, 10:44am · 1h 34m · 0 stops

LGA → DCA · American Airlines

Washington WAS

$91

Sep 10, 6:15am · 11h 3m · 1 stop

LGA → IAD · Frontier Airlines

Washington WAS

$100

Sep 26, 6:15am · 11h 3m · 1 stop

LGA → IAD · Frontier Airlines

Washington WAS

$100

Sep 12, 6:15am · 11h 3m · 1 stop

LGA → IAD · Frontier Airlines

Washington WAS

$110

Sep 09, 4:55pm · 7h 15m · 1 stop

LGA → IAD · Frontier Airlines

This page is only September 2026 on the LGA (New York) to Washington 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 LGA (New York) to Washington in September 2026.