$456 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 10/1. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Portugal

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
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, Sep 19 - Tue, Nov 17
United Airlines Logo
9:45 am - 11:05 am
RDM
-
LIS
41h 20m
2 stops
United Airlines Logo
1:00 pm - 11:51 am
LIS
-
RDM
30h 51m
2 stops
$788United Airlines
Sat, Sep 19 - Thu, Nov 19
United Airlines Logo
9:45 am - 11:05 am
RDM
-
LIS
41h 20m
2 stops
United Airlines Logo
5:00 am - 6:03 pm
LIS
-
RDM
21h 03m
2 stops
$791United Airlines
Sat, Sep 19 - Mon, Nov 16
Delta Logo
5:55 am - 10:45 am
RDM
-
LIS
44h 50m
2 stops
Delta Logo
11:25 am - 10:46 pm
LIS
-
RDM
43h 21m
2 stops
$800Delta
Mon, Sep 21 - Wed, Sep 30
United Airlines Logo
9:45 am - 9:20 am
RDM
-
LIS
39h 35m
3 stops
United Airlines Logo
11:25 am - 9:02 pm
LIS
-
RDM
41h 37m
2 stops
$834United Airlines
Sat, Sep 19 - Sat, Nov 21
United Airlines Logo
9:45 am - 11:05 am
RDM
-
LIS
41h 20m
2 stops
United Airlines Logo
5:00 am - 10:54 pm
LIS
-
RDM
25h 54m
2 stops
$841United Airlines
Mon, Sep 21 - Mon, Oct 5
Multiple Airlines Logo
12:30 pm - 10:25 pm
RDM
-
LIS
25h 55m
2 stops
Multiple Airlines Logo
7:45 pm - 4:35 pm
LIS
-
RDM
28h 50m
2 stops
$844Multiple Airlines
Thu, Sep 17 - Wed, Nov 18
United Airlines Logo
9:45 am - 10:45 pm
RDM
-
LIS
29h 00m
2 stops
United Airlines Logo
1:00 pm - 9:20 pm
LIS
-
RDM
40h 20m
2 stops
$847United Airlines
Thu, Sep 17 - Mon, Nov 16
Delta Logo
5:55 am - 8:50 am
RDM
-
LIS
42h 55m
2 stops
Delta Logo
11:25 am - 11:40 pm
LIS
-
RDM
44h 15m
2 stops
$850Delta
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
1:52 pm - 10:30 am
RDM
-
LIS
36h 38m
2 stops
United Airlines Logo
1:00 pm - 3:07 pm
LIS
-
RDM
58h 07m
2 stops
$861United Airlines
Sat, Oct 17 - Sat, Oct 24
United Airlines Logo
7:08 am - 9:20 am
RDM
-
LIS
42h 12m
3 stops
United Airlines Logo
11:25 am - 11:51 am
LIS
-
RDM
32h 26m
2 stops
$867United 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 $1,399 and $874 respectively.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$456
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly and prices are also 11% 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 9680 reviews
7.7Boarding
6.6Food
7.1Entertainment
8.1Crew
7.3Comfort
Airline reviews

Some crew were unfriendly or in some cases just straight up rude.

6.0 GoodAnonymous, Apr 2026
SFO - YVR
Read more United Airlines reviews

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

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

Information on your arrival and departure airports

Redmond (RDM)