$531 Find Cheap Flights from Redmond to Portugal - Compare and Save

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 9/10. 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

Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
1:52 pm - 9:20 am
RDM
-
LIS
35h 28m
2 stops
United Airlines Logo
1:00 pm - 10:54 pm
LIS
-
RDM
41h 54m
2 stops
$841United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
1:52 pm - 9:20 am
RDM
-
LIS
35h 28m
2 stops
United Airlines Logo
1:00 pm - 10:54 pm
LIS
-
RDM
41h 54m
2 stops
$842United Airlines
Wed, Jul 22 - Wed, Jul 29
Delta Logo
1:27 pm - 5:50 pm
RDM
-
LIS
20h 23m
2 stops
Delta Logo
5:35 am - 10:57 pm
LIS
-
RDM
25h 22m
2 stops
$946Delta
Sat, Oct 17 - Sat, Oct 24
Multiple Airlines Logo
6:00 am - 11:05 am
RDM
-
LIS
21h 05m
2 stops
Multiple Airlines Logo
1:00 pm - 11:51 am
LIS
-
RDM
30h 51m
3 stops
$1,053Multiple Airlines
Fri, Jul 24 - Fri, Jul 31
United Airlines Logo
5:55 am - 10:45 pm
RDM
-
LIS
32h 50m
2 stops
United Airlines Logo
1:00 pm - 10:59 pm
LIS
-
RDM
41h 59m
2 stops
$1,131United Airlines
Fri, Jul 24 - Fri, Jul 31
Air France Logo
1:27 pm - 10:25 pm
RDM
-
LIS
24h 58m
2 stops
Air France Logo
10:00 am - 10:57 pm
LIS
-
RDM
20h 57m
2 stops
$1,132Air France
Sat, Oct 17 - Sat, Oct 24
Multiple Airlines Logo
5:38 pm - 6:05 pm
RDM
-
LIS
16h 27m
2 stops
Multiple Airlines Logo
8:25 am - 11:50 pm
LIS
-
RDM
23h 25m
3 stops
$1,323Multiple Airlines
Sat, Jul 25 - Sat, Aug 1
Multiple Airlines Logo
6:00 am - 9:35 pm
RDM
-
LIS
31h 35m
2 stops
Multiple Airlines Logo
10:15 pm - 9:04 am
LIS
-
RDM
42h 49m
2 stops
$1,361Multiple Airlines
Sat, Jul 25 - Sat, Aug 1
United Airlines Logo
7:00 am - 9:20 am
RDM
-
LIS
42h 20m
3 stops
United Airlines Logo
7:25 am - 11:35 pm
LIS
-
RDM
48h 10m
2 stops
$1,534United Airlines
Wed, Jul 22 - Wed, Jul 29
Multiple Airlines Logo
5:55 am - 9:20 am
RDM
-
LIS
19h 25m
2 stops
Multiple Airlines Logo
11:25 am - 12:12 pm
LIS
-
RDM
32h 47m
3 stops
$1,538Multiple 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 $479 (return) on average. On the other hand, the most expensive months are June and September, when the average cost of round-trip tickets is $1,181 and $874 respectively.

Good to know

Low seasonJanuary
Cheapest flight$531
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 7% 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 9805 reviews
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
7.3Comfort
Airline reviews

It was perfect! United Airlines staff was extremely caring, super friendly and professional

10.0 ExcellentClaudia, Jun 2026
SFO - SIN
Read more United Airlines reviews

It was perfect! United Airlines staff was extremely caring, super friendly and professional

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Smooth travel. Immediate update prior flight delay so I can arrange myself properly without too rush.

Everything was the best it could be. Crew found me with pre- ordered food. Excellent experience!

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

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

Information on your arrival and departure airports