2LNR vs seats.aero: seats we have checked, not prices
It depends on what you track. seats.aero is an award-search aggregator across the loyalty programs listed in its own navigation, and on Pro it also runs upgrade finders for Alaska first class, Air Canada eUpgrades, Emirates, United PlusPoints and JetBlue Mint. 2LNR reads award seats too, and adds the two upgrade types those finders don't cover: American systemwide space and Delta Global and Regional Upgrade Certificate space. On Alaska first-class upgrade space the two overlap. 2LNR's free plan shows a rolling 14-day window you can refresh on demand; Pro at $175 a year opens the full 331-day horizon with unlimited alerts. seats.aero Pro is $9.99 a month or $99.99 a year, and its free tier covers flights departing in the next two months.
Reviewed .
2LNR vs seats.aero, feature by feature
Short answer: both tools watch award space, and both watch some upgrade space. seats.aero aggregates awards across the 26 programs it tracks and adds upgrade finders for Alaska, Air Canada, Emirates, United and JetBlue; 2LNR covers award space across more than 20 airlines and adds the two upgrade types those finders leave out, American systemwide upgrades and Delta Global and Regional Upgrade Certificates, in a standing calendar rather than a search.
We read the prices, program count, tier windows, upgrade tools, Pro alert filters and Partner API terms below on seats.aero's own site, help pages and developer docs on September 30, 2026. The stale-results criticism comes from the reviews linked in Sources. Tell us if something is out of date.
| Capability | seats.aero (as of September 2026) | 2LNR (as of September 2026) |
|---|---|---|
| Award coverage | Award space aggregated from the 26 loyalty programs it tracks, searchable across programs at once. | Award availability across more than 20 airlines in a calendar matrix, by route and date, the next 14 days free and the full horizon on Pro. |
| Upgrade inventory | Yes, on Pro, for five carriers: Alaska first class (U inventory, nonstops within North America), Air Canada eUpgrades (R inventory), Emirates, United PlusPoints, and JetBlue Move to Mint. No American systemwide or Delta certificate tool appeared in its Tools menu on the date below. | American systemwide upgrade space, Delta Global and Regional Upgrade Certificate space, and Alaska first-class upgrade space, per flight and date. Alaska overlaps with seats.aero; American and Delta do not. |
| Data freshness | Aggregated results, which seats.aero says update with fresh airline data as you view them; reviewers' recurring criticism is that a listing can already be gone. Pro adds live search on any route. | 2LNR checks availability daily, and you can refresh any cell inside your window on demand, on Free as well as Pro. |
| Free tier | Search, explore and alerts for flights departing within the next two months, in its own words, with no registration required. | 14-day upgrade matrix for American, Delta and Alaska with on-demand refresh, mailbox trip import, loyalty and status tracking. No credit card required. |
| Alerts | Availability alerts on the free tier; Pro adds alert filters for nonstop only, specific airlines, maximum points and maximum fees, plus SMS alerts. | Unlimited alert rules on Pro across upgrade and award space, delivered by email, SMS, in-app, and push. Free has no alerts. |
| Search horizon | The next two months free; Pro unlocks up to a year of availability on all routes, in its own words. | 14 days on Free; all 331 days on Pro. |
| Price | Pro $9.99/mo or $99.99/yr. Free tier available. | Pro $175/yr or $50/quarter. Free $0. |
We read every seats.aero fact in this table on its own site and help pages on September 30, 2026, including the upgrade finders in its Tools menu, which only show up on the live page. The stale-results criticism is the one exception: it comes from the reviews linked in Sources.
What seats.aero does well
A comparison is only useful if it's fair to the other tool. Two things seats.aero does well, stated plainly.
Breadth, answered instantly
seats.aero's core trick is coverage. It tracks award space in 26 loyalty programs, and its Explore tool answers "where can I go on points" across most of them at once, returning results immediately. Alerts are included on the free tier. If you hold transferable points and have no fixed destination yet, that's a different question from the one 2LNR answers, and seats.aero answers it well.
Pro adds live search, upgrade finders and developer access
Pro searches any route live, which is the right guard against acting on an aggregated result before you transfer points. It also adds advanced alert filters, up to a year of availability and a Partner API for non-commercial use. Its browser extension, which shows points pricing next to cash fares on Google Flights, works on the free tier too.
Pro carries genuine upgrade tools too, and it's worth saying plainly because this page used to claim otherwise: finders for Alaska first class, Air Canada eUpgrades, Emirates, United PlusPoints and JetBlue Mint. If Alaska first class is the upgrade you chase, seats.aero looks at the same upgrade space 2LNR does.
Where 2LNR takes a different approach
The two products answer different questions. These are the three differences that decide which one fits your year.
American and Delta upgrade inventory, which its finders leave out
Award space and upgrade space are separate buckets, and no award search returns either American or Delta upgrade space. An American systemwide upgrade clears against C-class inventory (A class for Flagship First) and Delta Global and Regional Upgrade Certificates clear against their own; seats.aero's upgrade finders cover Alaska, Air Canada, Emirates, United and JetBlue, not those two. 2LNR tracks American, Delta and Alaska per flight and date, so you commit a certificate only where space already exists.
The workflow for American is in the step-by-step SWU search guide.
A window you can refresh, not stored results you wait on
The recurring criticism of aggregated results in the reviews linked below is staleness: a result stands until something re-verifies it, and on seats.aero, searching live is a Pro feature. 2LNR checks availability daily and lets you refresh any cell inside your window on demand, on the free plan too. Fourteen days is a small window, but what it shows is current.
Upgrades, awards, and alerts in one calendar
The same calendar carries award availability across more than 20 airlines and upgrade space on American, Delta, and Alaska, with one alert engine over both. The interactive route map is free to browse without an account, and trips import automatically from Gmail or Outlook, so the routes you already fly populate themselves.
Who should use which
Neither tool is a superset of the other. Here's the split, by the question you're actually asking.
Use seats.aero when the destination is open
"I have 150,000 transferable points and eight days in October, where can I go in business class?" is a breadth question across many programs at once, and that's what an aggregator is built for. If you're shopping partner programs you've never booked before, start there.
Use 2LNR when the route is fixed
"I fly Dallas to London twice a quarter and I hold two systemwide upgrades" is a depth question. You need a standing calendar of the specific routes you fly, upgrade inventory as well as award space, and an alert the moment a check finds a date open. That's the product 2LNR is.
Plenty of frequent flyers run both, and there's nothing wrong with that. The comparison above is here so you can decide what your own routes need. If you're also weighing per-flight availability lookups, the 2LNR vs ExpertFlyer comparison covers that tool.
Frequently asked questions
Does seats.aero show upgrade availability?
How much does seats.aero Pro cost?
Is there a free seats.aero alternative?
Why do cached award results go stale?
Which is better for award search, seats.aero or 2LNR?
Sources
- seats.aero The product itself: the Pro price of $9.99 a month or $99.99 a year, the 26 loyalty programs its Routes menu lists as tracked (24 of them also have Explore pages), the free tier covering flights departing within the next two months, Pro unlocking up to a year of availability and live search on any route, and the Tools menu carrying its Alaska first class, Air Canada eUpgrade, Emirates, United PlusPoints and JetBlue Move to Mint upgrade finders. That menu is built in the browser, so you only see it on the live page. (accessed September 30, 2026)
- One Mile at a Time: guide to seats.aero What seats.aero is, how its aggregated search works, and its free alerts. (accessed September 30, 2026)
- Broadreach Travel: is seats.aero worth it? 2026 review covering Pro pricing, the 60-day free window, Pro's live re-check and alert filters, and stale results. (accessed September 30, 2026)
- AwardWallet: seats.aero guide A July 2026 guide to the product and its Finder tools, written when it counted 24 tracked programs. (accessed September 30, 2026)
- The Points Guy: seats.aero Coverage and pricing corroboration. (accessed September 30, 2026)
- seats.aero: Partner API getting started Pro users may use the partner API for non-commercial purposes only; commercial use needs a written agreement. (accessed September 30, 2026)
- seats.aero help: how do alerts work? The Pro alert filters (direct flights only, specific airlines, maximum points, maximum fees) and SMS alerts on Pro. (accessed September 30, 2026)
- seats.aero help: browser extension FAQ That the extension works for Free and Pro users and shows points pricing next to cash fares on Google Flights, Chase Travel and Amex Travel. (accessed September 30, 2026)
seats.aero is a trademark of its owner. 2LNR is not affiliated with or endorsed by seats.aero. Competitor pricing and features are as of September 2026 and may change; see the sources above.
See your routes in the upgrade and award matrix
Start free with the 14-day window and on-demand refresh. Go Pro when you need the full 331-day horizon and alerts.