Cheap flights from Portland to Singapore from $458
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Singapore departing on 9/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Portland to Singapore
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the typical price of a round-trip flight between Portland and Singapore?
What is the cheapest month to fly to Singapore?
The month of September is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $895. If you aren’t able to travel to Singapore during the month of September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $919.
What is the cheapest day to depart on your flight to Singapore?
The cheapest day to depart from Portland to Singapore is on a Tuesday when prices can be found for as low as $1,256. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,673.
What is the cheapest time of day to depart on your flight to Singapore?
At noon is the cheapest time of day to fly from Portland to Singapore when you can find flight prices for as low as $1,121. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,334 on average. Flights to Singapore from Portland in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Singapore?
You are more likely to see cheaper flights to Singapore from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $1,052 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Portland for as low as $933 on momondo.
Can stopping save me money on Portland to Singapore flights?
You could potentially save up to 13% on your flight if you consider stops on a Portland to Singapore flight.
How have Portland to Singapore flight prices changed over time?
As of June 2025, prices for Portland to Singapore flights are approximately 8% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Portland to Singapore Changi?
Air Canada, Singapore Airlines, and Delta are the most popular carriers operating from Portland to Singapore Changi
What airlines fly to Singapore?
United Airlines, Air Canada and Singapore Airlines are the top three most popular airlines that fly to Singapore from Portland according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Singapore. Keep in mind that there are 5 different airlines that fly to Singapore on a routine basis, so you have a few additional options to choose from.
When to book flights from Portland to Singapore
Cheap Portland to Singapore (PDX to SIN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Singapore
How far is Portland to Singapore Changi by plane?
The straight-line distance from Portland to Singapore Changi is 8130.5 mi. In terms of flight time, this usually takes a little over 20h 25m.
When did momondo last update prices for flights from Portland Airport to Singapore Changi Airport?
Prices for flights from Portland Airport to Singapore Changi Airport were last updated today.
How many operators does momondo search for flights from Portland Airport to Singapore Changi Airport?
As of June 2025, there are 5 operators available to choose from for flights from Portland Airport to Singapore Changi Airport.
How old do you have to be to fly from Portland Airport to Singapore Changi Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Singapore Changi Airport.
What documentation or ID do you need to fly to Singapore Changi Airport?
The travel and health documents required for your trip to Singapore Changi Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Singapore Changi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland to Singapore?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Portland to Singapore is United Airlines (45% of total bookings). The next most popular airlines are Air Canada (32%), Singapore Airlines (15%), and Korean Air (5%).
Best airlines flying from Portland to Singapore
Compare and see reviews for airlines that fly from Portland to Singapore with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $694 | Free Cancellation | Rating 7.1 9,657 reviews | |||
| PriceFrom $799 | Free Cancellation | Rating 7.4 8,852 reviews | |||
| PriceFrom $800 | Free Cancellation | Rating 8.0 7,969 reviews | |||
| PriceFrom $930 | Free Cancellation | Rating 8.4 1,101 reviews | |||
| PriceFrom $978 | Free Cancellation | Rating 8.1 1,319 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portland to Singapore?
Finding the right flight to Singapore from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Singapore quick and easy, saving you time and money.
Can I find flights from Portland to Singapore with flexible booking policies on momondo?
Flights from Portland to Singapore with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from Portland to Singapore?
Once you have performed a search for Portland to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Portland to Singapore right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Singapore, momondo offers a useful price alert feature which will track prices for flights to Singapore from Portland and alert you when they change.