UK PPL Theory Exam Prep
All 9 CAA Subjects

CAA
Covers the UK CAA PPL theory syllabus
Every lesson and question mapped to the 9 theory exams
Start Today

£1 for 3 days, then £23/month. Cancel any time.

1 Pick a subject
2 Choose how to study it
Real exam-style questions Every answer explained Why the wrong ones are wrong
✓ Unlimited questions, every answer explained
Trusted by student pilots at
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Why XAir

Everything you need
for PPL theory

XAir teaches you the subject, tests you on questions you have not seen, and tells you honestly when you are ready.

9CAA subjects
878lessons
∞questions
01 · Practise

Endless questions, so you learn the subject, not the answers

Question banks run out, and you start recognising the answers. XAir keeps writing new ones.

  • Unlimited questionsNew ones are written and checked whenever a topic runs low, so you never run out.
  • Almost never the same question twiceRewordings of ones you have seen are skipped too.
  • Every option explainedWhy the right answer is right, and why yours looked right.
Next: Learn
NavigationNew to you

Which altimeter subscale setting gives height above a specified aerodrome datum?

Tap an answer

02 · Learn

It teaches you, not just tests you

A question bank only tells you that you got it wrong. XAir teaches you why.

  • Every topic taughtAll 9 CAA subjects in 878 short lessons, one idea at a time.
  • Checked as you goA question after each idea, and a different explanation if you get it wrong.
  • An AI Ground InstructorBeside every lesson and question. Ask it anything.
Next: Quiz
Air Law · LessonCard 3 of 8

Right of way

When two aircraft are at about the same level, the one that has the other on its right gives way.

Tap the highlighted word

Ask the Ground Instructor about this
03 · Quiz

Practise under exam conditions

So the real paper feels familiar.

  • 5, 10 or 15 questionsTimed, like the real thing.
  • No hintsNothing to lean on until you finish, then every answer explained.
  • Marked at 75%The same pass mark as the real exam.
Next: Ready?
10:00on the clock
0hints

8 of 10 right: pass. The line is the 75% pass mark.

04 · Ready?

Know when you are ready, before you pay for the exam

XAir only says "ready" when the evidence is there. We would rather say "not yet" than see you pay for a resit.

  • Every topic scoredWatch it move from Weak to Strong after each answer.
  • What to fix nextTwo written findings after each round, about the aviation itself.
  • A cautious exam estimateAlways a range, never a promise, with your earliest exam date and what is still missing.
Next: Also included
Also included

Plus everything around it

All in the £23 a month plan.

  • METAR, cloud, CRP-5 and VOR toolsLive weather from 121 airports, and hands on help with the hardest Met and Nav topics.
  • Play against friendsQuick quiz games against mates or the AI.
  • iPhone app and browserPick up where you left off on either.
METAR decoderLive
24012KT: Wind from 240° at 12 knots

Tap any group

Try all of it for £1

Start for £13 days for £1, then £23 a month. Cancel any time.

They succeeded, it's now your turn

James T.✓ Pass in 1 month
Air Law
Sophie R.✓ Pass in 2 months
Meteorology

Tommy

Aviation Influencer

Fatima

Aviation Influencer

Daniel K.✓ Pass in 1 month
Navigation
Emily W.✓ Pass in 2 months
Aircraft General Knowledge

and 200+ more students who passed first time

West London Chambers of Commerce Business Awards 2025 Best New Business trophy
Award-winning

Best New Business 2025

XAir was named Best New Business at the West London Chambers of Commerce Business Awards.

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Start your PPL theory prep today

All 9 CAA PPL theory subjects: short lessons, practice questions with explanations, and mock exams.

Start 3 days for £1View Pricing

£1 for 3 days, then £23/month · cancel any time

£1 for 3 daysthen £23/month · cancel any time
Start for £1