United Flight UA4240 Deals & Information (2025/2026)

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United Flight 4240 Route Deals From $224

The cheapest prices found with in the last 7 days for return flights were $209 and $224 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Oct 1 - Sat, Oct 4
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$209 Roundtrip, found 4 days ago
$209
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 1 from Huntsville Intl. to Washington Dulles Intl., returning Sat, Oct 4, priced at $209 found 4 days ago
Sat, Aug 16 - Tue, Aug 19
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$211 Roundtrip, found 18 hours ago
$211
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Aug 16 from Huntsville Intl. to Washington Dulles Intl., returning Tue, Aug 19, priced at $211 found 18 hours ago
Wed, Oct 1 - Sat, Oct 4
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$219 Roundtrip, found 4 days ago
$219
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 1 from Huntsville Intl. to Washington Dulles Intl., returning Sat, Oct 4, priced at $219 found 4 days ago
Sat, Aug 16 - Tue, Aug 19
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$221 Roundtrip, found 18 hours ago
$221
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Aug 16 from Huntsville Intl. to Washington Dulles Intl., returning Tue, Aug 19, priced at $221 found 18 hours ago
Sat, Oct 11 - Sat, Oct 18
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$225 Roundtrip, found 5 days ago
$225
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 11 from Huntsville Intl. to Washington Dulles Intl., returning Sat, Oct 18, priced at $225 found 5 days ago
Wed, Oct 1 - Sat, Oct 4
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$228 Roundtrip, found 4 days ago
$228
Roundtrip
found 4 days ago
Select United flight, departing Wed, Oct 1 from Huntsville Intl. to Washington Dulles Intl., returning Sat, Oct 4, priced at $228 found 4 days ago
Sat, Aug 16 - Tue, Aug 19
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$229 Roundtrip, found 18 hours ago
$229
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Aug 16 from Huntsville Intl. to Washington Dulles Intl., returning Tue, Aug 19, priced at $229 found 18 hours ago
Tue, Jul 29 - Sun, Aug 3
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$234 Roundtrip, found 3 days ago
$234
Roundtrip
found 3 days ago
Select United flight, departing Tue, Jul 29 from Huntsville Intl. to Washington Dulles Intl., returning Sun, Aug 3, priced at $234 found 3 days ago
Sat, Oct 11 - Sat, Oct 18
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$234 Roundtrip, found 5 days ago
$234
Roundtrip
found 5 days ago
Select United flight, departing Sat, Oct 11 from Huntsville Intl. to Washington Dulles Intl., returning Sat, Oct 18, priced at $234 found 5 days ago
Sat, Aug 16 - Tue, Aug 19
HSV
Huntsville Intl.
IAD
Washington Dulles Intl.
$235 Roundtrip, found 18 hours ago
$235
Roundtrip
found 18 hours ago
Select United flight, departing Sat, Aug 16 from Huntsville Intl. to Washington Dulles Intl., returning Tue, Aug 19, priced at $235 found 18 hours ago