United Flight UA4172 Deals & Information (2025/2026)

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United Flight 4172 Route Deals From $52

The cheapest prices found with in the last 7 days for return flights were $105 and $52 for one-way flights to Ronald Reagan Washington National for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 16 - Tue, Aug 19
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$105 Roundtrip, found 11 hours ago
$105
Roundtrip
found 11 hours ago
Select United flight, departing Sat, Aug 16 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Tue, Aug 19, priced at $105 found 11 hours ago
Sat, Aug 16 - Tue, Aug 19
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$111 Roundtrip, found 11 hours ago
$111
Roundtrip
found 11 hours ago
Select United flight, departing Sat, Aug 16 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Tue, Aug 19, priced at $111 found 11 hours ago
Fri, Aug 15 - Mon, Aug 18
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$116 Roundtrip, found 11 hours ago
$116
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Aug 15 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Mon, Aug 18, priced at $116 found 11 hours ago
Sat, Aug 16 - Tue, Aug 19
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$118 Roundtrip, found 11 hours ago
$118
Roundtrip
found 11 hours ago
Select United flight, departing Sat, Aug 16 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Tue, Aug 19, priced at $118 found 11 hours ago
Fri, Aug 15 - Mon, Aug 18
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$121 Roundtrip, found 11 hours ago
$121
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Aug 15 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Mon, Aug 18, priced at $121 found 11 hours ago
Fri, Aug 15 - Mon, Aug 18
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$121 Roundtrip, found 11 hours ago
$121
Roundtrip
found 11 hours ago
Select United flight, departing Fri, Aug 15 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Mon, Aug 18, priced at $121 found 11 hours ago
Sat, Oct 4 - Sun, Oct 5
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$125 Roundtrip, found 1 day ago
$125
Roundtrip
found 1 day ago
Select United flight, departing Sat, Oct 4 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Sun, Oct 5, priced at $125 found 1 day ago
Sat, Aug 16 - Sun, Aug 17
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$126 Roundtrip, found 5 days ago
$126
Roundtrip
found 5 days ago
Select United flight, departing Sat, Aug 16 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Sun, Aug 17, priced at $126 found 5 days ago
Fri, Oct 24 - Sun, Oct 26
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$129 Roundtrip, found 4 hours ago
$129
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Oct 24 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Sun, Oct 26, priced at $129 found 4 hours ago
Tue, Aug 5 - Tue, Aug 12
EWR
Newark Liberty Intl. Airport
DCA
Ronald Reagan Washington National
$133 Roundtrip, found 23 hours ago
$133
Roundtrip
found 23 hours ago
Select United flight, departing Tue, Aug 5 from Newark Liberty Intl. Airport to Ronald Reagan Washington National, returning Tue, Aug 12, priced at $133 found 23 hours ago