$478 Find Cheap Flights from Redmond to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Redmond to Portugal departing on 8/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Flight Deals

Book Cheap Redmond to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Redmond to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Redmond to Portugal

Wed, Apr 1 - Wed, Apr 8
Delta Logo
5:15 am - 2:55 pm
RDM
-
LIS
25h 40m
2 stops
Delta Logo
5:00 am - 4:13 pm
LIS
-
RDM
19h 13m
2 stops
$661Delta
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
7:50 am - 11:30 pm
RDM
-
LIS
31h 40m
2 stops
United Airlines Logo
5:00 am - 9:45 pm
LIS
-
RDM
48h 45m
2 stops
$682United Airlines
Wed, Mar 4 - Sun, Mar 8
United Airlines Logo
1:54 pm - 11:30 pm
RDM
-
LIS
25h 36m
2 stops
United Airlines Logo
11:55 am - 12:11 pm
LIS
-
RDM
31h 16m
2 stops
$693United Airlines
Sat, Aug 1 - Wed, Sep 2
Scandinavian Airlines Logo
5:55 am - 10:45 am
RDM
-
LIS
20h 50m
2 stops
Scandinavian Airlines Logo
12:45 pm - 11:32 pm
LIS
-
RDM
18h 47m
2 stops
$732Scandinavian Airlines
Fri, Apr 3 - Fri, Apr 10
United Airlines Logo
5:00 am - 9:55 pm
RDM
-
LIS
32h 55m
2 stops
United Airlines Logo
6:15 am - 10:59 pm
LIS
-
RDM
24h 44m
2 stops
$738United Airlines
Wed, Jun 3 - Sat, Jun 13
Air France Logo
12:18 pm - 5:50 pm
RDM
-
LIS
21h 32m
2 stops
Air France Logo
6:50 pm - 4:39 pm
LIS
-
RDM
29h 49m
2 stops
$894Air France
Fri, May 15 - Sun, May 24
Delta Logo
6:22 am - 2:35 pm
RDM
-
LIS
24h 13m
2 stops
Delta Logo
5:35 am - 11:04 pm
LIS
-
RDM
25h 29m
2 stops
$938Delta
Sun, Mar 15 - Fri, Mar 20
United Airlines Logo
7:05 am - 9:20 am
RDM
-
LIS
43h 15m
2 stops
United Airlines Logo
11:55 am - 12:11 pm
LIS
-
RDM
31h 16m
2 stops
$947United Airlines
Tue, May 5 - Sat, May 9
Multiple Airlines Logo
1:52 pm - 9:55 am
RDM
-
LIS
36h 03m
2 stops
Multiple Airlines Logo
5:05 pm - 11:58 pm
LIS
-
RDM
38h 53m
2 stops
$963Multiple Airlines
Thu, Jun 4 - Sat, Jun 13
Multiple Airlines Logo
12:18 pm - 6:45 pm
RDM
-
LIS
22h 27m
2 stops
Multiple Airlines Logo
6:50 pm - 4:39 pm
LIS
-
RDM
29h 49m
2 stops
$969Multiple Airlines
Booking Insights

KAYAK's insights & trends for Redmond to Portugal flights

Get data-powered insights and trends into flights from Redmond to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Redmond to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Redmond to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Redmond to Portugal is February, when tickets cost $509 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,691 and $1,083 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$479
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Redmond to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Redmond to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Redmond to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Redmond to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Redmond to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Redmond to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Redmond to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Redmond to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Redmond to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Redmond to Portugal

 
Need help choosing which airline to fly with from Redmond to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9314 reviews
7.1Entertainment
6.6Food
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

it was a very short flight so my expectations were low.

6.0 GoodGeorge, Feb 2026
SFO - PSP
Read more United Airlines reviews

it was a very short flight so my expectations were low.

As great a red-eye flight as red-eye flights can be.

Once boarding started it was pretty quick. Food was inedible; cold and salty..

Entertainment kept turning itself off. Gave up on watching a movie.

Both the WIFI and entertainment did not work for 2.5h

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything you need to know for your flight from Redmond to Portugal

Information on your arrival and departure airports

Redmond (RDM)