United Flight UA4187 Deals & Information (2025/2026)

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United Flight 4187 Route Deals From $53

The cheapest prices found with in the last 7 days for return flights were $119 and $53 for one-way flights to Newark Liberty Intl. Airport for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Jul 31 - Thu, Aug 7
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$119 Roundtrip, found 5 days ago
$119
Roundtrip
found 5 days ago
Select United flight, departing Thu, Jul 31 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Thu, Aug 7, priced at $119 found 5 days ago
Fri, Aug 22 - Sun, Aug 24
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$129 Roundtrip, found 2 hours ago
$129
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Aug 22 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $129 found 2 hours ago
Sun, Aug 10 - Wed, Aug 13
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$136 Roundtrip, found 2 days ago
$136
Roundtrip
found 2 days ago
Select United flight, departing Sun, Aug 10 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Wed, Aug 13, priced at $136 found 2 days ago
Fri, Aug 8 - Tue, Aug 12
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$138 Roundtrip, found 20 hours ago
$138
Roundtrip
found 20 hours ago
Select United flight, departing Fri, Aug 8 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Tue, Aug 12, priced at $138 found 20 hours ago
Fri, Aug 29 - Mon, Sep 1
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$144 Roundtrip, found 4 hours ago
$144
Roundtrip
found 4 hours ago
Select United flight, departing Fri, Aug 29 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Mon, Sep 1, priced at $144 found 4 hours ago
Fri, Aug 29 - Mon, Sep 1
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$148 Roundtrip, found 6 hours ago
$148
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Aug 29 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Mon, Sep 1, priced at $148 found 6 hours ago
Sun, Aug 10 - Mon, Aug 11
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$154 Roundtrip, found 6 days ago
$154
Roundtrip
found 6 days ago
Select United flight, departing Sun, Aug 10 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Mon, Aug 11, priced at $154 found 6 days ago
Fri, Aug 22 - Sun, Aug 24
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$157 Roundtrip, found 2 hours ago
$157
Roundtrip
found 2 hours ago
Select United flight, departing Fri, Aug 22 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Sun, Aug 24, priced at $157 found 2 hours ago
Sun, Nov 23 - Fri, Nov 28
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$158 Roundtrip, found 1 day ago
$158
Roundtrip
found 1 day ago
Select United flight, departing Sun, Nov 23 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Fri, Nov 28, priced at $158 found 1 day ago
Thu, Jul 31 - Thu, Aug 7
IAD
Washington Dulles Intl.
EWR
Newark Liberty Intl. Airport
$159 Roundtrip, found 5 days ago
$159
Roundtrip
found 5 days ago
Select United flight, departing Thu, Jul 31 from Washington Dulles Intl. to Newark Liberty Intl. Airport, returning Thu, Aug 7, priced at $159 found 5 days ago